0 Question: How do scientists know how to make a flu vaccine if viruses can be different every year? Keywords: disease, flu, medicine, vaccine, virus Asked by anon-248496 to Zoya, Tom, Stacey, Laura, James, Connor on 15 Mar 2020.
James Lees answered on 15 Mar 2020:
It’s an educated guess.
Scientists use lots of data to figure out which flu strains are going to be the most common that year and turn that into a vaccine that they use.
Zoya answered on 18 Mar 2020:
The flu vaccine is normal a mixture of a few strains of viruses that are most prevalent. The benefit of giving you a mixture dose is so you have sort of over all immunity. Flu vaccines are strains of influenza.
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