January 8, 2015
HIV (human immunodeficiency virus) is the virus that causes AIDS (acquired immune deficiency syndrome). HIV kills or damages cells in the body's immune system, gradually destroying the body's ability to fight infection and certain cancers. CDC estimated that 1.1 million people were living with HIV/AIDS in the United States in 2010.
People with HIV/AIDS are at high risk of serious influenza-related complications. Studies done before routine use of highly active antiretroviral therapy (HAART) suggested an increased risk for heart- and lung-related hospitalizations in people infected with HIV during influenza season as opposed to other times of the year, and a higher risk of influenza-related death in HIV-infected people. Other studies have indicated that influenza symptoms might be prolonged and the risk of influenza-related complications is higher for certain HIV-infected people. Vaccination with a flu shot has been shown to produce an immune response against influenza viruses in certain people infected with HIV.
Because influenza can result in serious illness, HIV-infected persons are recommended for vaccination. To help you prepare for the flu this season, this fact sheet provides Questions & Answers to guide the administration of both flu shots and antiviral medications to people with HIV/AIDS.
People with HIV/AIDS are at high risk of serious influenza-related complications and should get the inactivated influenza vaccine (the flu shot). Persons with advanced HIV disease may have a poor immune response to vaccination. Therefore, pre-exposure chemoprophylaxis (use of antiviral medications to prevent influenza infection) may be considered for these patients if they are likely to be exposed to people with influenza.
Contraindications to the use of inactivated influenza vaccine (the flu shot) in persons with HIV/AIDS are the same as those for persons without HIV/AIDS.
No. Persons with HIV/AIDS should not get the nasal spray vaccine [LAIV] (FluMist®). LAIV (FluMist®) contains a weakened form of the live influenza virus. LAIV (FluMist®) is not recommended for use in people with weakened immune systems (immunosuppression).
Yes. It's very important that influenza antiviral drugs be used early to treat flu in people who are very sick with flu (for example people who are in the hospital) and people who are sick with flu and who have a greater chance of getting serious flu complications, such as people with HIV/AIDS.
Studies have shown that flu antiviral drugs work best for treatment if they are started within 2 days of getting sick. There may still be benefit in treating people with antiviral drugs even after two days have gone by, especially if the sick person has a greater chance of serious flu complications (See box on "What You Should Know About Flu Antiviral Drugs") or is very sick, for example in the hospital because of the flu.
People with HIV/AIDS should be prescribed oral oseltamivir or inhaled zanamivir to prevent infection with influenza when they cannot otherwise be protected during times when there is a high risk for exposure to influenza. Use should be in accordance with current recommendations from CDC or local public health authorities. Current CDC guidance on use of chemoprophylaxis should be consulted, and updated recommendations from CDC can be found on the seasonal influenza (flu) site.
There are no published data on interactions between the recommended influenza antiviral agents (oseltamivir, zanamivir and peramivir) and drugs used in the management of HIV infected persons. Patients should be observed for adverse drug reactions to influenza antiviral chemoprophylaxis agents, especially when neurologic conditions or renal insufficiency is present.
Influenza vaccination is recommended for health care workers, including those who are involved in direct care of HIV-infected patients. More information about vaccination of health care workers can be found in "Prevention and Control of Influenza With Vaccines: Recommendations of the Advisory Committee on Immunization Practices (ACIP), 2010." Health care workers who are younger than 50 years of age, and are not pregnant may receive the nasal-spray flu vaccine (LAIV/FluMist) as long as they do not care for severely immunosuppressed persons who require a protective environment.
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