There are many vaccine options to choose from, but the most important thing is for all people 6 months and older to get a flu vaccine every year. If you have questions about which vaccine is best for you, talk to your doctor or other health care professional. All flu vaccine for the season is quadrivalent. More information about flu vaccine supply is available. Flu vaccines that protect against four flu viruses have a safety profile similar to seasonal flu vaccines made to protect against three viruses, with similar—mostly mild—side effects.
Like all seasonal flu vaccines, vaccines that protect against four flu viruses are monitored annually for their safety and effectiveness. People who have a history of severe egg allergy those who have had any symptom other than hives after exposure to egg should be vaccinated in a medical setting, supervised by a health care provider who is able to recognize and manage severe allergic reactions.
Two completely egg-free ovalbumin-free flu vaccine options are available: quadrivalent recombinant vaccine and quadrivalent cell-based vaccine. To receive weekly email updates about Seasonal Flu, enter your email address:. Skip directly to site content Skip directly to page options Skip directly to A-Z link. Stay Connected with Flu. Links with this icon indicate that you are leaving the CDC website. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
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MedTech Dive. Wu KJ. The New York Times. Emerg Infect Dis. Houser K , Subbarao K. Influenza vaccines: challenges and solutions. Cell Host Microbe. US Food and Drug Administration. Euro Surveill. DOI Google Scholar. Influenza: propagation, quantification, and storage.
Curr Protoc Microbiol. J Clin Microbiol. Antigenic and genetic characteristics of swine-origin A H1N1 influenza viruses circulating in humans. Clin Infect Dis. Global transmission of influenza viruses from humans to swine. J Gen Virol. Adaptation of human influenza viruses to swine. Front Vet Sci. Outbreak of influenza A H3N2 variant virus infections among persons attending agricultural fairs housing infected swine—Michigan and Ohio, July—August J Virol.
Isolation, propagation, genome analysis and epidemiology of HKU1 betacoronaviruses. BioSpectrum Asia. Articles by Country Search — Search articles by the topic country. Article Type Search — Search articles by article type and issue. Please use the form below to submit correspondence to the authors or contact them at the following address: John R.
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You will be subject to the destination website's privacy policy when you follow the link. CDC is not responsible for Section compliance accessibility on other federal or private website. Cancel Continue. Article Citations. Emerging Infectious Diseases. People with neurologic and neurodevelopment conditions, including disorders of the brain, spinal cord, peripheral nerve, and muscle, such as cerebral palsy, seizure disorder, stroke, intellectual disability, moderate to severe developmental delay, muscular dystrophy, or spinal cord injury.
People with immunosuppression, including that caused by medications or by HIV infection. Women who are pregnant or postpartum within two weeks after delivery. People younger than 19 years who are receiving long-term aspirin therapy. American Indians and Alaska Natives. People with extreme obesity i.
Residents of nursing homes and other chronic care facilities. While current guidance focuses on antiviral treatment of those with severe illness or at high risk of complications, antiviral treatment may be prescribed for any previously healthy non-high risk outpatient with suspected or confirmed influenza who presents within two days after illness onset.
Multiple randomized controlled clinical trials RCTs and meta-analyses of RCTs have demonstrated efficacy of early initiation of treatment started within 48 hours of illness onset with neuraminidase inhibitors in reducing duration of fever and illness symptoms by about a day compared with placebo in otherwise healthy children and adults with uncomplicated influenza.
Choice of Antiviral Medication Four influenza antiviral medications approved by the U. The recommended treatment course for uncomplicated influenza is— One dose twice daily of oral oseltamivir for five days, or One dose twice daily of inhaled zanamivir for five days, or One dose of intravenous peramivir, or One dose of oral baloxavir. Health Advisory: Provides important information for a specific incident or situation; may not require immediate action.
Health Update: Provides updated information regarding an incident or situation; unlikely to require immediate action. Info Service: Provides general information that is not necessarily considered to be of an emergent nature. Top of Page. Links with this icon indicate that you are leaving the CDC website.
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