Vaccine

Vaccines include killed or modified pathogens to trigger the immune system to produce antibodies without causing the disease. When exposed to the actual pathogen later, the immune system reacts more robustly.

What do vaccines typically contain to help the immune system?

• Antibiotics

• Live pathogens

• Vitamins

• Killed or modified microorganisms

Which of the following is NOT a component of vaccines?

• Killed microorganisms

• Live pathogens

• Modified microorganisms

• Antibodies

How do vaccines help the immune system without causing the disease?

• By increasing body temperature

• By stimulating antibody production

• By providing nutrients

• By reducing stress

What happens when a vaccinated person encounters a live pathogen?

• The immune system responds more strongly

• The pathogen becomes inactive

• The immune system ignores it

• The person gets sick immediately

Why is the immune response stronger in vaccinated individuals?

• Because they have a higher body temperature

• Because they have more white blood cells

• Because they have pre-existing antibodies

• Because they have more nutrients