How Vaccines Work

The first ever vaccine was for:

• chickenpox

• pnemonia

• smallpox

Which of the following responses show that the immune system is working?

Choose all that apply

• coughing

• sneezing

• inflimmation

• fever

What 2 cells help fight disease?

• B and T

• X and Y

Older people may face very serious risk if the pathogen is particularyl

• severe

• mild

Live attenuated vaccines are made of the pathogen itself.  

• false

• true

What is the ingredient that triggers the immune response? 

• antigen

• bio hydrogenated life sources