When the familiar antigens are detected, B-lymphocytes produce antibodies to attack them.
Vaccines prevent diseases that can be dangerous, or even deadly.
Vaccines greatly reduce the risk of infection by working with the body’s natural defenses to safely develop immunity to disease.
How can vaccination affect the spread of disease?
Many infectious diseases move through populations by infecting people who are not immune to the disease and then spreading onwards. When a high percentage of the population is vaccinated, it is difficult for infectious diseases to spread because there are not many people who can be infected.
How does a vaccine provide immunity against infection?
Your immune system reacts to the vaccine in a similar way that it would if it were being invaded by the disease — by making antibodies. The antibodies destroy the vaccine germs just as they would the disease germs — like a training exercise. Then they stay in your body, giving you immunity.
Can vaccinated individuals spread disease?
Secondly, fully vaccinated people are much less likely to spread the disease to others, according to the Centers for Disease Control and Prevention (CDC). “We owe it to ourselves and our loved ones to become protected so that those who are unable to receive the vaccine do not become infected,” Chapnick said.