2009-10 Influenza (Flu) Season
CDC carries out and collaborates with outside partners to assess the
effectiveness of seasonal flu vaccines. During the 2009-10 season, CDC is
planning multiple studies on the effectiveness of the seasonal influenza
vaccine and the 2009 H1N1 vaccine. These studies will measure vaccine
effectiveness in preventing laboratory-confirmed seasonal and 2009 H1N1
influenza infections in children, pregnant women, health care workers, and
What is CDC doing to monitor antiviral resistance in the United States
during the 2009-10 season?
Antiviral resistance means that a virus has changed in such a way that
antiviral drugs are less effective in treating or preventing illnesses caused
by the virus. Samples of viruses collected from around the United States and
worldwide are studied to determine if they are resistant to any of the four
FDA-approved influenza antiviral drugs.
CDC routinely collects viruses through a domestic and global surveillance
system to monitor for changes in influenza viruses. CDC will continue ongoing
surveillance and testing of seasonal influenza viruses and 2009 H1N1 influenza
viruses to check for antiviral resistance. Recently, CDC has implemented
enhanced surveillance across the United States to detect oseltamivir resistance
in 2009 H1N1 viruses. CDC also is working with the state public health
departments and the World Health Organization to collect additional information
on antiviral resistance in the United States and worldwide. The information
collected will assist in making informed public health policy
What actions can I take to protect myself and my family against both
seasonal flu and 2009 H1N1 flu this year?
CDC recommends a yearly seasonal
flu vaccine as the first and most important step in protecting against
seasonal flu. While there are many different flu viruses, the seasonal flu
vaccine protects against the three main seasonal flu strains that research
indicates will cause the most illness during the flu season. The seasonal flu
vaccine can protect you from getting sick from these three viruses or it can
make your illness milder if you get a related flu virus. The seasonal flu
vaccine will not provide protection against the new H1N1 influenza. However a
2009 H1N1 vaccine is currently being made. The 2009 H1N1 vaccine is not
intended to replace the seasonal flu vaccine – it is intended to be used
along-side seasonal flu vaccine.
In addition, 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. If soap and water are not available, an alcohol-based hand rub*can be used.
- Avoid touching your eyes, nose and mouth. Germs spread this way.
- Try to avoid close contact with sick people.
- If you are sick with flu-like illness,
CDC recommends that you stay home for at least 24 hours after your fever is
gone except to get medical care or for other necessities. (Your fever
should be gone without the use of a fever-reducing medicine.) Keep away from
others as much as possible to keep from making others sick.
What flu antiviral drugs does CDC recommend in the United States for the