¿ Explique porque una persona que recibe la vacuna contra la gripe puede contraer resfriado ?

Si se resfría poco después de recibir la vacuna contra la gripe, no tiene ninguna relación con la vacuna. (Desafortunadamente, los virus que causan los resfriados son completamente diferentes del virus de la influenza, por lo que la vacuna contra la influenza no ofrece protección contra los resfriados).

Explanation:

If you get a cold shortly after you get a flu vaccine, it's completely unrelated to the vaccine. (Unfortunately, the viruses that cause colds are completely different from the flu virus, so the flu vaccine offers no protection against colds.)

answer:

i believe the answer is d).

explanation:

i think this is because you are tearing apart the muscle, and then when you eat, the muscle re-heals, making itself even stronger.

edit: i put b) before but i meant to put d). sorry for the incorrect answer.

answer:

it could come from a variety of sources.

explanation:

..although it was most likely developed through zoonotic transmission, where an infectious disease which usually afflicts when animals jump to humans.