Question

2. What are vaccines? How do they help in the prevention of a disease?​

Answer 1

Answer:

Question 1.

“Workers of my homeland! I have faith in Chile and its future…… It will be a moral lesson to castigate felony, cowardice, and treason.” Who said this?

(a) General Augusto Pinochet

(b) General Alberto Bachelet

(c) Salvador Allende

(d) Michelle Bachelet

Answer 2

Answer:

A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins