NEET BIOLOGY

Detailed explanation-1: -Vaccines boost our immune system by developing immunity against disease-causing pathogens. Vaccines prevent us from many fatal diseases. It also reduces the risk of infection transmission from one person to another.

Detailed explanation-2: -Frequent hand-washing, covering your nose and mouth while coughing or sneezing, and avoiding contact with infected people helps prevent the spread of respiratory infections. Avoiding touching your nose, mouth or eyes and disinfecting hard surfaces also helps.

Detailed explanation-3: -Vaccines help your immune system fight infections faster and more effectively. When you get a vaccine, it sparks your immune response, helping your body fight off and remember the germ so it can attack it if the germ ever invades again.

Detailed explanation-4: -Viruses prevented by vaccines include polio, Hepatitis A, Hepatitis B, smallpox, measles, mumps, rubella, and rotavirus. Examples of bacterial infections prevented by vaccines include tetanus and pneumococcal disease ( here, here ).