Category: Vaccines

Vaccination is the administration of antigenic material to stimulate an individual’s immune system to develop adaptive immunity to a pathogen. Vaccines can prevent or ameliorate morbidity from infection.

Community Immunity (“Herd” Immunity)

When a critical portion of a community is immunized against a contagious disease, most members of the community are protected against that disease. This is known as “community (or ‘herd’) immunity.” The principle of community immunity applies to control of…

Measles: Questions and Answers

Information about Measles and Vaccines What causes measles? Measles is caused by a virus. How does measles spread? Measles is spread from person to person through the air by infectious droplets; it is highly contagious. How long does it take…

Measles Outbreak – Evolution in Action

CDC Confirms 84 Cases of Measles Centers for Disease Control and Prevention Good job, Anti-Vaxxers. Measles is back in the USA. For years, scientists have warned that the anti-vaccination movement was going to cause epidemics of disease. The way that…