shelbdelb07 shelbdelb07
  • 02-02-2021
  • Biology
contestada

3. Viruses may harm host cells. A vaccine is one way that infection from viruses
can be controlled. Why can't a vaccine help people already infected with a virus?

Respuesta :

s206110
s206110 s206110
  • 02-02-2021

Answer:

because some may be close to dying

Explanation:

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