Why do they have a new flu shot each year? The answer to that is simple. Viruses and bacteria can mutate or change. If you have heard of a super bug or antibiotic resistant strains of bacteria, they are examples of mutations in the bugs that make us sick. According to the CDC,
"There are two reasons for getting a yearly flu vaccine:
- The first reason is that because flu viruses are constantly changing, flu vaccines may be updated from one season to the next to protect against the most recent and most commonly circulating viruses.
- The second reason that annual vaccination is recommended is that a person’s immune protection from vaccination declines over time and annual vaccination is needed for optimal protection."
Lastly what are the side effects of the flu shot? Again I will refer to the CDC.
"Different side effects can be associated with the flu shot and LAIV.
The flu shot: The viruses in the flu shot are killed (inactivated), so you cannot get the flu from a flu shot. Some minor side effects that could occur are:
- Soreness, redness, or swelling where the shot was given
- Fever (low grade)
- Aches
The nasal spray (also called LAIV or FluMist®): The viruses in the nasal-spray vaccine are weakened and do not cause severe symptoms often associated with influenza illness. (In clinical studies, transmission of vaccine viruses to close contacts has occurred only rarely.)
In children, side effects from LAIV (FluMist®) can include:
- runny nose
- wheezing
- headache
- vomiting
- muscle aches
- fever
- runny nose
- headache
- sore throat
- cough
For my money I am getting a flu shot every year. I just think it is the smart thing to do. If you want to read more about the flu check out www.cdc.gov/flu/. That is all.
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