Can You Prevent the Flu After Exposure?
People infected withthe fluusually notice symptoms within two days of exposure.
It’s also possible to have an active influenza infection without symptoms.
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Over-the-counter medications for fever, cough, or congestion can help relieve symptoms.
You also support your immune system to better fight the virus by:
Vitamins for Viruses?
Always talk to a healthcare provider before starting any new vitamins or supplements.
Vaccinations for influenza are updated annually to target the most prevalent flu strains.
You may also want to considerother vaccinesthat protect your overall healthespecially if you fall into a high-risk category.
Are You Immunocompromised?
Certain medical conditions like diabetes or medications like corticosteroids can also weaken your immune system.
Talk to your healthcare provider about your medical history and the drugs you are taking.
If you areimmunocompromised, you may want to take extra steps to protect yourself from the flu.
Seasonal flu vaccines can’t guarantee you won’t become infected with influenza, but they help.
However, the flu can be passed on up to a week after symptoms start.
United States Census Bureau.United States.
Centers for Disease Control and Prevention.About estimated flu burden.
Centers for Disease Control and Prevention.How the flu spreads.
Centers for Disease Control and Infection.Influenza: CDC yellow book 2024.
Liang Y.Pathogenicity and virulence of influenza.Virulence.
2023;14(1):2223057. doi:10.1080/21505594.2023.2223057
Centers for Disease Control and Prevention.Treating the flu with antiviral drugs.
Centers for Disease Control and Prevention.Types of influenza viruses.
Centers for Disease Control and Prevention.Healthy habits: enhancing immunity.
National Institutes of Health.Dietary supplements for immune function and infectious diseases.
Centers for Disease Control and Prevention.What vaccines are recommended for you.
American Academy of Allergy, Asthma, and Immunology.Flu vaccine guidance for patients with immune deficiency.
Centers for Disease Control and Prevention.Preventing seasonal flu.
Centers for Disease Control and Prevention.CDC seasonal flu vaccine effectiveness studies.
Centers for Disease Control and Prevention.2024-2025 flu season.
