MICROANATOMY

BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS

LYMPH NODES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Although vaccines cannot be used to treat a person who is sick, they can help to prevent infections. Vaccinations tell the body to create “memory cells", which will function later to create antibodies against certain pathogens. When a person is vaccinated, what are they injected with?
A
antibodies to a disease bacterium
B
live, inactive viruses
C
weakened viruses or antigens from the virus
D
blood from a person who has had the disease
Explanation: 

Detailed explanation-1: -Vaccines can help protect against certain diseases by imitating an infection. This type of imitation infection, helps teach the immune system how to fight off a future infection.

Detailed explanation-2: -Vaccines provide immunity from infectious diseases like tetanus, diphtheria, whooping cough, measles, polio etc. Our body has an immune system which fights microbial infection. When this system first sees an infectious microbe, it kills the microbe and remembers it.

Detailed explanation-3: -Chickenpox (varicella) Cholera. COVID-19. Diphtheria. Haemophilus influenzae type b (Hib) Hepatitis A. Hepatitis B. Human papillomavirus. More items

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