Skip directly to search Skip directly to A to Z list Skip directly to site content Skip directly to page options
CDC Home

Influenza activity is declining nationally, but remains high in parts of the country and may continue for some time. This season has been severe for people 65 and older with key indicators showing many hospitalizations and deaths in that age group. CDC recommends that high risk persons, including seniors, seek care as soon as possible for flu symptoms because antiviral treatment can avert serious flu outcomes.

Flu Basics

Symptoms, How Flu Spreads, Higher Risk Groups, Past and Current Flu Season…

Prevention - Flu Vaccine

Vaccine Safety, Vaccination Coverage, Influenza VIS, "Take 3" Actions, NIVW, Infection Control…

Treatment - Antiviral Drugs

Drugs to Treat Flu Virus, Stay Home When Sick, Caring for Someone Sick With Flu…

News & Highlights

Flu Spotlights, Press Releases…


Health Professionals

Vaccination, Antiviral Drugs, Infection Control, Diagnostic Testing, Patient Education, and Training…

Free Resources

Printable Materials, Photos, Podcasts, Videos, PSAs, eCards, Badges & Buttons, Articles…

Information For Partners

Campaign Highlights, Partner Activity Entries, Media Briefings, Promotional and Educational Tools…

PHIL Influenza Images

Public Health Image Library, Photographs, Illustrations, Multimedia Files…

Other Flu Web Sites

Avian

There are many different influenza A Viruses; some are found in humans and others in animals such as avian flu in birds and poultry.

More

H3N2v

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.

More

Swine

There are many different influenza A Viruses; some are found in humans and others in animals such as swine flu in pigs.

More

Pandemic

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.

More

Bat

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.

More

Canine

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.

More

Other

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).

More

 

CDC 24/7 – Saving Lives. Protecting People. Saving Money Through Prevention. Learn More About How CDC Works For You…

Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
  • Contact CDC-INFO
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC-INFO