Respuesta :
Answer:
because flu viruses are constantly changing, flu vaccines may be updated from one season to the next to protect against the viruses that research suggests may be most common during the upcoming flu season. For the best protection, everyone 6 months and older should get vaccinated annually.
Explanation:
Answer:
Explanation:
Every flu season is different, and influenza infection can affect people differently, Flu vaccines cause antibodies to develop in the body about two A trivalent flu shot made using an adjuvant (an ingredient that helps to protect yourself and the people around you from flu, and to help reduce the strain on healthcare systems responding to the corona pandemic