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Flu shot (vaccine) for prevention of Flu in healthy Adults

  • Insignificant

    Bottom Line

  • Flu shot vaccine with “dead” inactivated viruses. 69 studies conducted, with 70,000 adults. Prevents 1 flu case in 71 vaccinated adults, and 1 influenza-like-illness in 40 vaccinated adults. Does not prevent flu complications. Irritating side effects. Unclear safety.

    • EVIDENCE | WELL TESTED
    • EFFECTIVENESS | MILD BENEFITS
    • SAFETY | MILD RISKS

Recommendations

Think before you take it, and decide for yourself:

It prevents flu infection for 1.4% of the vaccinated adults, but it does not prevent complications or hospitalization. It has irritating side effects and unclear safety.

Doctors Say That

Note that the information here relates only to HEALTHY adults. Flu vaccines are, for example, essential for asthmatic adults.

About Flu shot (vaccine)

Flu shot vaccine with “dead” inactivated viruses

  • Target Population:

    healthy Adults, 16 to 65 years old

  • Dosage:

    Seasonal vaccine (once a year). Most brands - 0.5 mL (Fluzone - 0.25 mL, Fluzone Intradermal - 0.1 mL). One dose.

  • Goal:

    Prevention of Influenza infection, symptoms and complications.

Research Summary

  • Well tested
  • 69 Clinical Studies
  • 70,000 Adults Tested
  • Mild benefits
  • Benefits:

    Prevents 1 case of influenza infection when the vaccine is given to 71 adults. Prevent 1 influenza-like-illness (including similar symptoms due to other viruses and causes) when the vaccine is given to 40 adults. Does not prevent complications or hospitalization.

  • Mild risks
  • Risks:

    Unclear. More research needed. Irritating side effects: soreness, redness, and/or swelling from the shot; headache, fever, cough, nausea, muscle aches, itching, sore eyes.

Influenza virus infection Overview

  • Medical problem:

    Flu (influenza virus infection and symptoms).

  • Symptoms and signs:

    Cough, dizziness, fever, headache, nausea, pains, runny nose, sore throat, vomiting and aches.

  • Complications:

    Ear infection, lung infection, Seizures.

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Influenza vaccines, also known as flu shots or flu jabs, are vaccines that protect against infection by influenza virus. A new version of the vaccine is developed twice a year as the influenza virus rapidly changes.Their effectiveness varies from year to year. The effectiveness in those under two years old and over 65 years old is unknown due to the low quality of the research. (source)
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