Vaccination and Herd Immunity Quiz

What is the primary purpose of vaccines?

• To reduce the spread of infectious diseases

• To cure infectious diseases

• To provide immediate relief from symptoms

• To replace the need for antibiotics

What is meant by herd immunity?

• Immunity developed by consuming herd milk

• Immunity developed by a population when a high percentage is vaccinated

• Immunity developed by animals in a herd

• Immunity developed by an individual after vaccination

How are vaccines typically administered?

• Via the mouth or as an injection into the bloodstream

• Through inhalation

• By applying a topical cream

• Through a nasal spray

What do vaccines contain to trigger an immune response?

• Live pathogens

• Antigens from the pathogen

• Antibodies

• White blood cells

What is an example of a disease that caused a pandemic?

• Chickenpox

• COVID-19

• Influenza

• Measles

What is antigenic variability?

• The ability of a virus to change its surface antigens

• The ability of a virus to remain unchanged

• The ability of a vaccine to adapt to different viruses

• The ability of the immune system to recognize all pathogens

Why is there no effective vaccine for the common cold?

• Because it mutates too quickly

• Because there are over a hundred types of the cold virus

• Because it is not a serious disease

• Because it does not trigger an immune response

What happens during the secondary immune response?

• The person develops symptoms of the disease

• The pathogen is ignored by the immune system

• A large amount of antibodies is produced rapidly

• A small amount of antibodies is produced slowly

What is an example of artificial active immunity?

• Immunity developed after taking antibiotics

• Immunity developed after recovering from a disease

• Immunity developed after receiving a vaccine

• Immunity passed from mother to child

What can lead to the breakdown of herd immunity?

• A significant number of people choosing not to be vaccinated

• A high percentage of the population being vaccinated

• The introduction of a new vaccine

• The eradication of a disease