Showing posts with label influenza. Show all posts
Showing posts with label influenza. Show all posts

Wednesday, September 9, 2009

Swine Flu Contamination and Cleaning CDC Source

As per the CDC - Contamination & Cleaning

How long can influenza virus remain viable on objects (such as books and doorknobs)?

Studies have shown that influenza virus can survive on environmental surfaces and can infect a person for 2 to 8 hours after being deposited on the surface.

What kills influenza virus?

Influenza virus is destroyed by heat (167-212°F [75-100°C]). In addition, several chemical germicides, including chlorine, hydrogen peroxide, detergents (soap), iodophors (iodine-based antiseptics), and alcohols are effective against human influenza viruses if used in proper concentration for a sufficient length of time. For example, wipes or gels with alcohol in them can be used to clean hands. The gels should be rubbed into hands until they are dry.

*What if soap and water are not available and alcohol-based products are not allowed in my facility?
Though the scientific evidence is not as extensive as that on hand washing and alcohol-based sanitizers, other hand sanitizers that do not contain alcohol may be useful for killing flu germs on hands.

What surfaces are most likely to be sources of contamination?
Germs can be spread when a person touches something that is contaminated with germs and then touches his or her eyes, nose, or mouth. Droplets from a cough or sneeze of an infected person move through the air. Germs can be spread when a person touches respiratory droplets from another person on a surface like a desk, for example, and then touches their own eyes, mouth or nose before washing their hands.

How should waste disposal be handled to prevent the spread of influenza virus?
To prevent the spread of influenza virus, it is recommended that tissues and other disposable items used by an infected person be thrown in the trash. Additionally, persons should wash their hands with soap and water after touching used tissues and similar waste.

What household cleaning should be done to prevent the spread of influenza virus?
To prevent the spread of influenza virus it is important to keep surfaces (especially bedside tables, surfaces in the bathroom, kitchen counters and toys for children) clean by wiping them down with a household disinfectant according to directions on the product label.

How should linens, eating utensils and dishes of persons infected with influenza virus be handled?
Linens, eating utensils, and dishes belonging to those who are sick do not need to be cleaned separately, but importantly these items should not be shared without washing thoroughly first.
Linens (such as bed sheets and towels) should be washed by using household laundry soap and tumbled dry on a hot setting. Individuals should avoid “hugging” laundry prior to washing it to prevent contaminating themselves. Individuals should wash their hands with soap and water or alcohol-based hand rub immediately after handling dirty laundry.

Eating utensils should be washed either in a dishwasher or by hand with water and soap.

Source: http://www.cdc.gov/H1N1flu/qa.htm

Thursday, May 14, 2009

What You Can Do To Stay Healthy Per CDC

What You Can Do to Stay Healthy

As per the CDC:
  • Stay informed. This website will be updated regularly as information becomes available.
    Influenza is thought to spread mainly person-to-person through coughing or sneezing of infected people.
  • Take everyday actions to stay healthy.
  • Cover your nose and mouth with a tissue when you cough or sneeze. Throw the tissue in the trash after you use it.
  • Wash your hands often with soap and water, especially after you cough or sneeze. Alcohol-based hands cleaners are also effective.
  • Avoid touching your eyes, nose or mouth. Germs spread that way.
  • Stay home if you get sick. CDC recommends that you stay home from work or school and limit contact with others to keep from infecting them.
  • Follow public health advice regarding school closures, avoiding crowds and other social distancing measures.
  • Find healthy ways to deal with stress and anxiety.
  • Call 1-800-CDC-INFO for more information.

Wednesday, May 13, 2009

CDC Increases Testing for Swine Flu

CDC has developed a PCR diagnostic test kit to detect this novel H1N1 virus and has now distributed test kits to all states in the U.S. and the District of Columbia and Puerto Rico. The test kits are being shipped internationally as well. This will allow states and other countries to test for this new virus. This increase in testing will likely result in an increase in the number of confirmed cases of illness reported. This, combined with ongoing monitoring through Flu View should provide a fuller picture of the burden of disease in the United States over time.

http://www.cdc.gov/h1n1flu/

Tuesday, May 12, 2009

CDC Public Guidance on Swine Flu H1N1 Virus

Public Guidance

In addition, CDC has provided guidance for the public on what to do if they become sick with flu-like symptoms, including infection with novel H1N1. CDC also has issued instructions on taking care of a sick person at home. Novel H1N1 infection has been reported to cause a wide range of symptoms, including fever, cough, sore throat, body aches, headache, chills and fatigue. In addition, a significant number of people also have reported nausea, vomiting or diarrhea. Everyone should take everyday preventive actions to stop the spread of germs, including frequent hand washing and people who are sick should stay home and avoid contact with others in order to limit further spread of the disease.
Source: http://www.cdc.gov/h1n1flu/

Swine Flu CDC Update - New Virus Emerges

A New Virus Emerges

Novel influenza A (H1N1) is a new flu virus of swine origin that was first detected in April, 2009. The virus is infecting people and is spreading from person-to-person, and has sparked a growing outbreak of illness in the United States with an increasing number of cases being reported internationally as well.

CDC anticipates that there will be more cases, more hospitalizations and more deaths associated with this new virus in the coming days and weeks because the population has little to no immunity against it. Novel influenza A (H1N1) activity is now being detected in two of CDC’s routine influenza surveillance systems as reported in the May 8, 2009 FluView. FluView is a weekly report that tracks U.S. influenza activity through multiple systems across five categories.

The May 8 FluView found that the number of people visiting their doctors with influenza-like-illness is higher than expected in the United States for this time of year. Second, laboratory data shows that regular seasonal influenza A (H1N1), (H3N2) and influenza B viruses are still circulating in the United States, but novel influenza A (H1N1) and “unsubtypable”* viruses now account for a significant number of the viruses detected in the United States.

It’s thought that novel influenza A (H1N1) flu spreads in the same way that regular seasonal influenza viruses spread; mainly through the coughs and sneezes of people who are sick with the virus.

CDC continues to take aggressive action to respond to the outbreak. CDC’s response goals are to reduce the spread and severity of illness, and to provide information to help health care providers, public health officials and the public address the challenges posed by this new public health threat.

Source: http://www.cdc.gov/h1n1flu/

Sunday, May 10, 2009

CDC Develops PCR Diagnostic Test Kit

As per the CDC website - CDC Has Increased Testing

CDC has developed a PCR diagnostic test kit to detect this novel H1N1 virus and has now distributed test kits to all states in the U.S. and Puerto Rico. The test kits are being shipped internationally as well. This will allow states and other countries to test for this new virus. This increase in testing capacity is likely to result in an increase in the number of reported confirmed cases in this country, which should provide a more accurate picture of the burden of disease in the United States.

Source: http://www.cdc.gov/h1n1flu/

Thursday, May 7, 2009

Antimicrobial Products for Use Against Swine Flu and Other Influenza Viruses

Antimicrobial Products Registered for Use Against the H1N1 Flu (Swine Flu) and Other Influenza A Viruses on Hard Surfaces - As Per USEPA

The World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC) are currently tracking an H1N1 flu outbreak that has caused infections in humans in the United States, Mexico, Canada and other countries. Information on this Web page will help you identify antimicrobial products that are registered by EPA to disinfect hard, non-porous surfaces that may be contaminated with the 2009-H1N1 flu.

EPA registers pesticide products, including disinfectants. As part of the registration process, EPA evaluates the product efficacy to make sure the public health label claims are accurate. Currently, over 500 disinfectant products are registered for use on hard, non-porous surfaces against influenza A viruses. EPA believes, based on available scientific information, that the currently registered influenza A virus products will be effective against the 2009-H1N1 flu strain and other influenza A virus strains on hard, non-porous surfaces. For safe and effective use of these products, always follow label instructions for these products, paying special attention to the product’s dilution rate (if applicable) and contact time.

Choose a product whose label states that it is effective against "Influenza A virus" and lists your specific site of concern, such as: farm premises, hospitals and other healthcare facilities, schools, offices or homes. These products are widely available and can be purchased at drugstores, supermarkets, and home maintenance/repair stores, among others.

As the CDC stresses, your first line of defense is to wash your hands frequently with soap and water or use an alcohol-based cleaner. These registered disinfectant products are for use on hard, non-porous surfaces, such as door knobs, handles, tables, floors, etc. EPA emphasizes that these products are not to be used on the skin or to be taken orally.

More than 500 antimicrobial products (20 pp, 62 K PDF) are registered by EPA specifically for use against influenza A virues. This is not a complete list since some products may have different distributor or product names and may not be referenced. We will continue to update this list as more information becomes available. Approved products specifically have label information which states they provide effectiveness against “Influenza A virues.”

Up-to-date information about the 2009-H1N1 flu is available on CDC’s Web site

Source: http://www.epa.gov/oppad001/influenza-disinfectants.html

Wednesday, May 6, 2009

Influenza A(H1N1) Swine Flu - update May 6 2009

As per WHO - May 6 2009, 22 countries have officially reported 1516 cases of influenza A (H1N1) infection.

Mexico has reported 822 laboratory confirmed human cases of infection, including 29 deaths. The United States has reported 403 laboratory confirmed human cases, including one death.

The following countries have reported laboratory confirmed cases with no deaths - Austria (1), Canada (165), China, Hong Kong Special Administrative Region (1), Colombia (1), Costa Rica (1), Denmark (1), El Salvador (2), France (4), Germany (9), Guatemala (1), Ireland (1), Israel (4), Italy (5), Netherlands (1), New Zealand (6), Portugal (1), Republic of Korea (2), Spain (57), Switzerland (1) and the United Kingdom (27).

It is considered prudent for people who are ill to delay international travel and for people developing symptoms following international travel to seek medical attention, in line with guidance from national authorities. Individuals are advised to wash hands thoroughly with soap and water on a regular basis and should seek medical attention if they develop any symptoms of influenza-like illness.

WHO advises no restriction of regular travel or closure of borders.

There is no risk of infection from this virus from consumption of well-cooked pork and pork products.

Further information on the situation will be available on the WHO website on a regular basis.
Source: http://www.who.int/csr/don/2009_05_06/en/index.html

Tuesday, May 5, 2009

Infections With a Swine-Origin Influenza A (H1N1) Virus

On April 28, this report was posted as an MMWR Dispatch on the MMWR website (http://www.cdc.gov/mmwr ).

Since April 21, 2009, CDC has reported cases of respiratory infection with a swine-origin influenza A (H1N1) virus (S-OIV) transmitted through human-to-human contact (1,2). This report updates cases identified in U.S. states and highlights certain control measures taken by CDC. As of April 28, the total number of confirmed cases of S-OIV infection in the United States had increased to 64, with cases in California (10 cases), Kansas (two), New York (45), Ohio (one), and Texas (six). CDC and state and local health departments are investigating all reported U.S. cases to ascertain the clinical features and epidemiologic characteristics. On April 27, CDC distributed an updated case definition for infection with S-OIV (Box).

Of the 47 patients reported to CDC with known ages, the median age was 16 years (range: 3--81 years), and 38 (81%) were aged <18 years; 51% of cases were in males. Of the 25 cases with known dates of illness onset, onset ranged from March 28 to April 25 (Figure). To date, no deaths have been reported among U.S. cases, but five patients are known to have been hospitalized. Of 14 patients with known travel histories, three had traveled to Mexico; 40 of 47 patients (85%) have not been linked to travel or to another confirmed case. Information is being compiled regarding vaccination status of infected patients, but is not yet available. According to the World Health Organization (WHO), as of April 27, a total of 26 confirmed cases of S-OIV infection had been reported by Mexican authorities. Canada has reported six cases and Spain has reported one case.*


Compete releae can be found at http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5816a5.htm

Monday, May 4, 2009

H1N1 Flu (Swine Flu) Update May 4 2009

CDC continues to take aggressive action to respond to an expanding outbreak caused by novel H1N1 flu.

CDC’s response goals are to:

1.Reduce transmission and illness severity, and
2.Provide information to help health care providers, public health officials and the public address the challenges posed by this emergency.

CDC continues to issue and update interim guidance daily in response to the rapidly evolving situation. CDC will issue updated interim guidance for clinicians on how to identify and care for people who are sick with novel H1N1 flu illness. This guidance will provide priorities for testing and treatment for novel H1N1 flu infection. The priority use for influenza antiviral drugs during this outbreak will be to treat people with severe flu illness.

On May 3, CDC is scheduled to complete deployment of 25 percent of the supplies in the Strategic National Stockpile (SNS) to all states in the continental United States. These supplies and medicines will help states and U.S. territories respond to the outbreak. In addition, the Federal Government and manufacturers have begun the process of developing a vaccine against the novel H1N1 flu virus.

Response actions are aggressive, but they may vary across states and communities depending on local circumstances. Communities, businesses, places of worship, schools and individuals can all take action to slow the spread of this outbreak. People who are sick are urged to stay home from work or school and to avoid contact with others, except to seek medical care. This action can avoid spreading illness further.

Source: http://www.cdc.gov/h1n1flu/

Sunday, May 3, 2009

Maryland Dept of Heath and Hygiene Swine Flu Preparedness Guide

Maryland's Department of Health and Metal Hygiene has developed a Swine Flu Preparedness Guide which can be found at Swine Flu Preparedness Guide. It includes Common Sense Precautions Including:
•Wash your hands often, especially after coughing, sneezing, and wiping or blowing the nose.
•Cover your mouth when coughing or sneezing.
•Use paper tissues when wiping or blowing your nose; throw tissues away after use.
•Stay away from crowded living and sleeping spaces, if possible.
•Stay home and avoid contact with other people to protect them from catching your illness.

Saturday, May 2, 2009

Antiviral Drugs and H1N1 Flu (Swine Flu)

As per the CDC ( http://www.cdc.gov/h1n1flu/antiviral.htm )

Antiviral Drugs

Antiviral drugs are prescription medicines (pills, liquid or an inhaler) with activity against influenza viruses, including swine influenza viruses. Antiviral drugs can be used to treat swine flu or to prevent infection with swine flu viruses. These medications must be prescribed by a health care professional. Influenza antiviral drugs only work against influenza viruses -- they will not help treat or prevent symptoms caused by infection from other viruses that can cause symptoms similar to the flu.

There are four influenza antiviral drugs approved for use in the United States (oseltamivir, zanamivir, amantadine and rimantadine). The swine influenza A (H1N1) viruses that have been detected in humans in the United States and Mexico are resistant to amantadine and rimantadine so these drugs will not work against these swine influenza viruses. Laboratory testing on these swine influenza A (H1N1) viruses so far indicate that they are susceptible (sensitive) to oseltamivir and zanamivir.

Benefits of Antiviral Drugs
Treatment: If you get sick, antiviral drugs can make your illness milder and make you feel better faster. They may also prevent serious influenza complications. Influenza antiviral drugs work best when started soon after illness onset (within two 2 days), but treatment with antiviral drugs should still be considered after 48 hours of symptom onset, particularly for hospitalized patients or people at high risk for influenza-related complications.

Prevention: Influenza antiviral drugs also can be used to prevent influenza when they are given to a person who is not ill, but who has been or may be near a person with swine influenza. When used to prevent the flu, antiviral drugs are about 70% to 90% effective. When used for prevention, the number of days that they should be used will vary depending on a person’s particular situation.

CDC Recommendation

CDC recommends the use of oseltamivir or zanamivir for the treatment and/or prevention of infection with swine influenza viruses.

•Oseltamivir (brand name Tamiflu ®) is approved to both treat and prevent influenza A and B virus infection in people one year of age and older.
•Zanamivir (brand name Relenza ®) is approved to treat influenza A and B virus infection in people 7 years and older and to prevent influenza A and B virus infection in people 5 years and older.

Recommendations for using antiviral drugs for treatment or prevention of swine influenza will change as we learn more about this new virus.

Friday, May 1, 2009

CDC H1N1 Flu Update (Swine Flu)

CDC continues to take aggressive action to respond to an expanding outbreak caused by H1N1 (swine flu). CDC’s response goals are to reduce transmission and illness severity, and provide information to help health care providers, public health officials and the public address the challenges posed by this emergency.

CDC continues to issue and update interim guidance daily in response to the rapidly evolving situation. Early this morning, CDC provided interim guidance on school closures. Supplies from CDC’s Division of the Strategic National Stockpile (SNS) are being sent to all 50 states and U.S. territories to help them respond to the outbreak. In addition, the Federal Government and manufacturers have begun the process of developing a vaccine against this new virus.

Response actions are aggressive, but they may vary across states and communities depending on local circumstances. Communities, businesses, places of worship, schools and individuals can all take action to slow the spread of this outbreak. People who are sick are urged to stay home from work or school and to avoid contact with others, except to seek medical care. This action can avoid spreading illness further.

Source: http://www.cdc.gov/h1n1flu/

Thursday, April 30, 2009

Swine Flu Questions and Info Part III

How serious is swine flu infection?

Like seasonal flu, swine flu in humans can vary in severity from mild to severe. Between 2005 until January 2009, 12 human cases of swine flu were detected in the U.S. with no deaths occurring. However, swine flu infection can be serious. In September 1988, a previously healthy 32-year-old pregnant woman in Wisconsin was hospitalized for pneumonia after being infected with swine flu and died 8 days later. A swine flu outbreak in Fort Dix, New Jersey occurred in 1976 that caused more than 200 cases with serious illness in several people and one death.

What is CDC doing in response to the outbreak?

April 29, 2009, 10:55 PM ETCDC has implemented its emergency response. The agency’s goals are to reduce transmission and illness severity, and provide information to help health care providers, public health officials and the public address the challenges posed by the new virus. CDC continues to issue new interim guidance for clinicians and public health professionals. In addition, CDC’s Division of the Strategic National Stockpile (SNS) continues to send antiviral drugs, personal protective equipment, and respiratory protection devices to all 50 states and U.S. territories to help them respond to the outbreak.

What epidemiological investigations are taking place in response to the recent outbreak?

CDC works very closely with state and local officials in areas where human cases of H1N1 (swine flu) infections have been identified. In California and Texas, where EpiAid teams have been deployed, many epidemiological activities are taking place or planned including:
  • Active surveillance in the counties where infections in humans have been identified;
  • Studies of health care workers who were exposed to patients infected with the virus to see if they became infected;
  • Studies of households and other contacts of people who were confirmed to have been infected to see if they became infected;
  • Study of a public high school where three confirmed human cases of influenza A (H1N1) of swine origin occurred to see if anyone became infected and how much contact they had with a confirmed case; and
  • Study to see how long a person with the virus infection sheds the virus.

Source: http://www.cdc.gov/swineflu/swineflu_you.htm

For previous Part II of this series go to http://moldandasbestos.blogspot.com/2009/04/swine-flu-questions-part-ii.html

Agricultural Workers At Increased Risk For Infection With Animal Flu Viruses

Findings May Have Implications for Pandemic Flu Planning

(EPA press release - http://www.epa.gov/aging/press/othernews/2005/2005_1125_ons_1.htm )

Farmers, veterinarians and meat processors who routinely come into contact with pigs in their jobs have a markedly increased risk of infection with flu viruses that infect pigs, according to a study funded in part by the National Institute of Allergy and Infectious Diseases (NIAID), one of the National Institutes of Health (NIH). While the findings are not entirely unexpected, the strikingly higher risk of infection coupled with the fact that pigs can be infected by swine viruses, bird (avian) viruses as well as human flu viruses -- thereby acting as a virtual virus "mixing bowl," especially on farms where pigs, chickens and people coexist -- is a potential public health concern, the study authors assert. The paper appears online this week in "Clinical Infectious Diseases".

"Pigs play a role in transmitting influenza virus to humans," says NIAID Director Anthony S. Fauci, M.D. "The worry is that if a pig were to become simultaneously infected with both a human and an avian influenza virus, genes from these viruses could reassemble into a new virus that could be transmitted to and cause disease in people."

The study results strongly suggest that occupational exposure to pigs significantly increases the risk of developing swine influenza infection. Agricultural workers should, therefore, be considered in developing flu pandemic surveillance plans and antiviral and immunization strategies, according to the study's co-investigator, Gregory C. Gray, M.D., director of the University of Iowa Center for Emerging Infectious Diseases.

"If migratory birds introduce the H5N1 bird flu virus into swine or poultry populations in this country, agricultural workers may be at a much greater risk of developing a variant H5N1 and passing it along to non-agricultural workers," Gray says. "Not protecting agricultural workers could amplify influenza transmission among humans and domestic animals during a pandemic and cause considerable damage to the swine and poultry industries, as well as the U.S. economy." While swine in other countries have been infected by the H5N1 virus, to date, the virus has not become readily transmissible between swine.

Swine influenza infections generally produce mild or no symptoms in both pigs and humans. However, exposure to swine flu virus at a 1988 Wisconsin county fair resulted in serious illness for 50 swine exhibitors and three of their family members; one previously healthy woman who became infected died.

The U.S. swine industry, which employs about 575,000 people, has shifted during the past 60 years from primarily small herds located on family farms to large herds maintained in expansive but confined agricultural facilities. Crowded conditions coupled with the constant introduction of young pigs to existing herds have made swine flu infections among pigs a year-round occurrence rather than the seasonal event they once were. As a result, there is a constant opportunity for people who are occupationally exposed to pigs to become infected with influenza viruses and, conversely, a continual opportunity for human flu viruses to mix with swine or bird flu viruses.
To determine the prevalence of swine influenza infection among swine-exposed employees, the researchers, led by Dr. Gray and graduate student Kendall P. Myers, examined serum samples taken from four adult populations in Iowa between 2002 and 2004. Three populations were occupational groups exposed to pigs: 111 farmers, 97 meat processing workers and 65 veterinarians. The fourth control group included 79 volunteers from the University of Iowa with no occupational pig exposure.

The researchers tested the serum samples for antibodies to several then-current swine and human influenza A viruses. The results showed that all three occupational study groups had markedly elevated antibodies to swine flu viruses compared with the control group. Farmers had the strongest indication of exposure to swine flu viruses, as much as 35 times higher than the control group. Similarly, comparable values were as much as 18 times higher for veterinarians and as much as 7 times higher for meat processors than the control group. In contrast, exposure to human flu virus in the occupational groups was not significantly different than that of the control group.

To date, the H5N1 avian virus has not appeared in the United States in any animal population or in humans.

NIAID is a component of the National Institutes of Health, an agency of the U.S. Department of Health and Human Services. NIAID supports basic and applied research to prevent, diagnose and treat infectious diseases such as HIV/AIDS and other sexually transmitted infections, influenza, tuberculosis, malaria and illness from potential agents of bioterrorism. NIAID also supports research on transplantation and immune-related illnesses, including autoimmune disorders, asthma and allergies.

------------------------------------------------

References: KP Myers et al. Are swine workers in the United States at increased risk of infection with zoonotic influenza virus? "Clinical Infectious Diseases". Published online November 22, 2005. Appearing in the January 1, 2006 print edition.

News releases, fact sheets and other NIAID-related materials are available on the NIAID Web site at http://www.niaid.nih.gov.

The National Institutes of Health (NIH) -- "The Nation's Medical Research Agency" -- includes 27 Institutes and Centers and is a component of the U. S. Department of Health and Human Services. It is the primary Federal agency for conducting and supporting basic, clinical, and translational medical research, and it investigates the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit http://www.nih.gov.

This NIH News Release is available online at: http://www.nih.gov/news/pr/nov2005/niaid-25.htm

Wednesday, April 29, 2009

Swine Flu Information Video From the CDC

In this video, Dr. Joe Bresee with the CDC Influenza Division describes swine flu - its signs and symptoms, how it's transmitted, medicines to treat it, steps people can take to protect themselves from it, and what people should do if they become ill.



Avian Flu (Avian Influenza) Viruses Introduction Information

As per the United States OSHA website, numerous stories have aired on radio and television or been published in various news media concerning avian influenza and in particular the H5N1 subtype. Unfortunately there is now much confusion about the different human diseases caused by influenza viruses.

Influenza A viruses can cause three distinct diseases in humans: avian, pandemic and seasonal influenza. Avian influenza in humans is rare and the most common route of infection is via direct or indirect contact with secretions (nasal, oral or fecal) from infected poultry. Transmission from human-to-human, if it exists, is extremely rare. However, avian influenza viruses have the potential to mutate or reassort and become pandemic viruses; those that can be readily transmitted between humans and those for which the population has little immunity. If these viruses spread throughout the world, the disease caused by them would be called pandemic influenza and the new viruses would be called pandemic influenza viruses. Previous pandemic influenza episodes have occurred in two or three waves of 6-8 week duration and spanned a 12-18 month period. After this period, the population will have built up immunity to the virus, either naturally or through vaccination. If the virus continues to circulate in the population and causes disease, it would become an influenza virus that causes seasonal influenza (more popularly called human influenza or the flu).

Influenza A viruses are subdivided into numerous subtypes. The subtypes are differentiated by variations in two viral surface proteins, hemagglutinin (H) and neuraminidase (N). Sixteen different H proteins and nine N proteins have been identified. Subtypes are designated by numbering particular combinations of these proteins (e.g., H5N1). Therefore, there are a total of 144 possible subtypes (16H x 9N) of influenza A viruses and all or most of these have been found in wild waterfowl. Interestingly only three of the 144 subtypes, H1N1, H2N2 and H3N2, have caused pandemic influenza in the 20th century. Only strains of H1N1 and H3N2 are currently circulating and causing seasonal influenza. Recently a number of different subtypes of influenza A viruses have emerged as agents of avian influenza in humans and these include H5N1, H7N2, H7N3, H7N7 and H9N2.

As of October 2006, H5N1 viruses have killed more than 150 people in ten different countries since the beginning of 2003. On the other hand, the H7N7 virus has been associated with a single human death but numerous cases of conjunctivitis (eye infection) in the Netherlands. The H7N2, H7N3 and H9N2 viruses have caused only mild disease in humans. While the number of human deaths caused by the H5N1 virus is small in comparison to the annual deaths attributed to human seasonal influenza viruses (~36,000/ year in the U.S.), it is of particular concern to the public health community because many scientists believe that this virus may continue to mutate or reassort and a strain may ultimately develop the ability to pass readily between humans. If this happens, the virus that emerges may cause the next major influenza pandemic.

As of October 2006, the highly pathogenic avian influenza (HPAI) H5N1 virus has not been detected in North or South America and it is important to understand that a pandemic influenza virus has not yet emerged and when, and if, it will emerge is impossible to predict.

For more information visit the OSHA website



Can the air you breathe at home or office KILL YOU? It HAS in the past! To protect yourself and your family now, click here

Tuesday, April 28, 2009

Swine Flu Questions - Part II

What can I do to protect myself from getting sick?

There is no vaccine available right now to protect against swine flu. There are everyday actions that can help prevent the spread of germs that cause respiratory illnesses like influenza. Take these everyday steps to protect your health:

  • Cover your nose and mouth with a tissue when you cough or sneeze. Throw the tissue in the trash after you use it.
  • Wash your hands often with soap and water, especially after you cough or sneeze. Alcohol-based hand cleaners are also effective.
  • Avoid touching your eyes, nose or mouth. Germs spread this way.
  • Try to avoid close contact with sick people.
  • If you get sick with influenza, CDC recommends that you stay home from work or school and limit contact with others to keep from infecting them.

How can someone with the flu infect someone else?

Infected people may be able to infect others beginning 1 day before symptoms develop and up to 7 or more days after becoming sick. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick.

Source: http://www.pandemicflu.gov/faq/swineflu/010.html

Can the air you breathe at home or office KILL YOU? It HAS in the past! To protect yourself and your family now, click here

Swine Flu Questions - Part I

What is swine flu?
Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza viruses. Outbreaks of swine flu happen regularly in pigs. People do not normally get swine flu, but human infections can and do happen. Most commonly, human cases of swine flu happen in people who are around pigs but it’s possible for swine flu viruses to spread from person to person also.

Are there human infections with swine flu in the U.S.?
In late March and early April 2009, cases of human infection with swine influenza A (H1N1) viruses were first reported in Southern California and near San Antonio, Texas. CDC and local and state health agencies are working together to investigate this situation. An updated case count of confirmed swine flu infections in the United States is kept at http://www.cdc.gov/swineflu/investigation.htm. CDC and local and state health agencies are working together to investigate this situation.


How many swine flu viruses are there?
Like all influenza viruses, swine flu viruses change constantly. Pigs can be infected by avian influenza and human influenza viruses as well as swine influenza viruses. When influenza viruses from different species infect pigs, the viruses can reassort (i.e. swap genes) and new viruses that are a mix of swine, human and/or avian influenza viruses can emerge. Over the years, different variations of swine flu viruses have emerged. At this time, there are four main influenza type A virus subtypes that have been isolated in pigs: H1N1, H1N2, H3N2, and H3N1. However, most of the recently isolated influenza viruses from pigs have been H1N1 viruses.

Source:http://pandemicflu.gov/index.html

Monday, April 27, 2009

OSHA Guidance Update on Protecting Employees from Avian Flu (Avian Influenza) Viruses

OSHA Guidance Update on Protecting Employeesfrom Avian Flu (Avian Influenza) Viruses

Employers are responsible for providing a safe and healthful workplace for their employees. OSHA's role is to assure the safety and health of America's employees by setting and enforcing standards; providing training, outreach and education; establishing partnerships; and encouraging continual improvement in workplace safety and health.

The handbook provides a general overview of a particular topic related to OSHA standards. It does not alter or determine compliance responsibilities in OSHA standards or the Occupational Safety and Health Act of 1970. Because interpretations and enforcement policy may change over time, you should consult current OSHA administrative interpretations and decisions by the Occupational Safety and Health Review Commission and the Courts for additional guidance on OSHA compliance requirements.

To see the entire publication go to
http://www.osha.gov/Publications/3323-10N-2006-English-07-17-2007.html