Influenza Vaccination in Adults

It is time once again to be thinking about taking your flu shot.   A recently published study by the National Foundation for Infectious Diseases (NFID) estimated that only 52% of US adults plan to take the flu shot.  Reasons for not being vaccinated include:

  • I do not believe it works (51%)
  • Concern it would cause an adverse effect (34%)
  • Concern that the vaccine would give them the flu (22%)

Health and Human Services Secretary Alex M. Azar II said, “Each season, flu vaccination prevents several million illnesses, tens of thousands of hospitalizations and thousands of deaths.  Over recent years, on average, flu vaccination has reduced the average adult’s chance of going to the doctor by between 30 – 60%.

A recent study performed by the northern California Kaiser Permanente Group, using seven years of flu season data, shows the immunity from the shot is near perfect for the first six weeks and then begins to wane. They estimate your post-vaccination chance of getting the flu, even if immunized, increases by 16% every 28 days after the shot but is near perfect for the first 42 days.

It is believed the Center for Disease Control (CDC) will recommend in future years that adults receive two flu shots each season. One will be administered at the beginning of the season and one six weeks later.  For the moment, the CDC acknowledges the flu season begins at different times in different regions of the country and suggests you receive your vaccination about two weeks before it arrives.

In South Florida, we typically see the arrival of the Influenza A virus after Thanksgiving. It peaks the last two weeks in January and first two weeks in February. For this reason, we suggest taking the shot later in the fall.

Vaccines are inactivated meaning they are not live and cannot give anyone the flu!

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