Why is it necessary to receive flu vaccines annually?

New flu vaccines are released every year to keep up with rapidly adapting flu viruses. When you get vaccinated, your immune system produces antibodies to protect you from the viruses included in the vaccine. But antibody levels may decline over time — another reason to get a flu shot every year.

Explanation:

Explanation:

When you get vaccinated, your immune system produces antibodies to protect you from the viruses included in the vaccine. But antibody levels may decline over time — another reason to get a flu shot every year.

research and refer clients to community resources, such as food stamps, child care, and healthcare.one of the most important things provided is counceling and a support chain of trusted individuals who can and try to relate to their situation at hand (europa do not touch this comment)(sorry europa keeps trolling my account and he blocks all my answers)

which ever one is showing doing the same exercise in time intervals such as 30 seconds or a minute several times.