- Avian Flu: H7N9 Virus—Electron Micrograph Images of H7N9 Virus from China
- CDC Influenza Application—for Clinicians and Health Care Professionals
- FluView Interactive—Influenza Surveillance Data the Way You Want it!
- FluVaxView—How many people got their flu vaccination early this season?
- CDC Communications to Clinicians—Activity updates and current recommendations.
The 2012-2013 season is winding down in the United States, however influenza viruses are still circulating in parts of the country. CDC continues to urge high risk persons to seek care quickly if they develop flu symptoms; antiviral treatment can avert serious flu outcomes. Ongoing vaccination is recommended for institutional outbreaks, children needing their second dose, and travelers going to the Southern Hemisphere, which will enter its flu season.
Symptoms, How Flu Spreads, Higher Risk Groups, Past and Current Flu Season…
Vaccine Safety, Vaccination Coverage, Influenza VIS, "Take 3" Actions, NIVW, Infection Control…
Drugs to Treat Flu Virus, Stay Home When Sick, Caring for Someone Sick With Flu…
Flu Spotlights, Press Releases…
Vaccination, Antiviral Drugs, Infection Control, Diagnostic Testing, Patient Education, and Training…
Printable Materials, Photos, Podcasts, Videos, PSAs, eCards, Badges & Buttons, Articles…
Campaign Highlights, Partner Activity Entries, Media Briefings, Promotional and Educational Tools…
Public Health Image Library, Photographs, Illustrations, Multimedia Files…
Other Flu Web Sites
There are many different influenza A viruses; some are found in humans and others in animals such as avian flu in birds and poultry.
A new avian influenza A (H7N9) virus has been detected in China. CDC is following this situation closely and coordinating with domestic and international partners.
Influenza viruses that normally circulate in pigs are called “variant” viruses when they are found in people. Influenza A H3N2 variant viruses (also known as “H3N2v” viruses) with the matrix (M) gene from the 2009 H1N1 pandemic virus were first detected in people in July 2011.
There are many different influenza A Viruses; some are found in humans and others in animals such as swine flu in pigs.
CDC’s pandemic preparedness efforts include ongoing surveillance of human and animal influenza viruses, risk assessments of influenza viruses with pandemic potential, and the development and improvement of preparedness tools that can aid public health practitioners in the event of an influenza pandemic.
Bat influenza refers to influenza A viruses found in bats. Laboratory research at CDC suggests these viruses would need to undergo significant changes to become capable of infecting and spreading easily among humans. Little yellow shouldered bats are not native to the continental United States, but are common in Central and South America.
Dog flu is a contagious respiratory disease in dogs caused by a specific Type A influenza virus referred to as a “canine influenza virus.” This is a disease of dogs, not of humans.
Influenza A viruses are found in humans and many different animals, including ducks, chickens, pigs, whales, horses and seals. Additional information on 2009 H1N1 influenza, Flu.gov, and Nonpharmaceutical Interventions (NPIs).