flu vaccine

Vaccination is perhaps the best way to protect yourself against many diseases including flu, but flu vaccine is no silver bullet. The vaccine’s effectiveness varies from year to year, depending on the closeness among that season’s viruses and the vaccine, which is usually reformulated each year. This winter in the United States, the vaccine’s performance has been very poor, leaving people more vulnerable to a virus that’s causing the flu.

The Centers for Disease Control and Prevention, which conducts studies annually to gauge the vaccine’s protective ability, has found that vaccination reduces the risk of getting flu by 40 percent to 60 percent during seasons when most circulating flu viruses are well-matched to the flu vaccine. Older people often have weak immune systems and a lower protective immune response after flu vaccination compared to younger, healthier people.

Some pharmaceutical companies are now producing flu vaccines and the virus in mammalian cells instead of chicken eggs to avoid the egg-adaption problem. It might work better than traditional, egg-based flu vaccines.

  1. April 22, 2018

    I recently read an article which stated that The Centers for Disease Control (CDC) issued its latest flu update, and it came with some dire-sounding news about this year’s flu vaccine effectiveness. The 2017-2018 flu shot is only 36% effective against influenza A and B, which encompasses H3N2, the problematic flu strain that’s been circulating widely this year.That effectiveness rate is actually better than expected. And public health experts widely agree that you should still get this year’s flu shot if you haven’t.

  2. August 30, 2018

    The newer the better I guess in this case. Scientist are working on getting the vaccines purer and better, so it’s not unusual for them to get more effective over time.

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