Herd immunity is important because it defines when a whole community is protected. That includes people who haven't caught the disease, people who had the illness and recovered, and people who got a ...

Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...

Rates of pertussis, also known as whooping cough, are surging in Texas, Florida, California, Oregon, and other states and localities across the country. The outbreaks are fueled by falling vaccination ...

Historically, inflammation against self was considered autoimmune, a concept that stems back to the seminal observations by Ehrlich, who described serum factors now known to be autoantibodies produced ...