Live vaccines are made from greatly weakened forms of disease-causing organisms. Often, live vaccines provide full protection after one or two doses. Examples of live vaccines include oral polio ...

Vaccine shedding is when components of a vaccine are released into the body or out into the environment. This can only happen in live-attenuated vaccines that contain a weakened form of a pathogen.

Making Vaccines by Rick Groleau Today there is mounting concern about the threat of a bioterrorist attack using smallpox—so much concern that in October 2001 the American government decided to ...

Live attenuated vaccines may cause neurotropic complications, especially in immunocompromised individuals. The yellow fever vaccine can lead to neurotropic disease (YEL-AND), manifesting as ...

The claim: CDC data shows COVID-19 vaccines could lower life expectancy by up to 24 years. A Sept. 4 Instagram post (direct link, archive link) shows a screenshot of a post on X, formerly Twitter ...