American vaccines that transformed public health, prevented millions of illnesses over 250 years

American vaccines that transformed public health, prevented millions of illnesses over 250 years

Before the first successful vaccine was developed in 1796, Americans had little protection against deadly infectious diseases like smallpox, measles and diphtheria. Over the next 250 years, vaccines helped eliminate or dramatically reduce many vaccine-preventable infectious diseases, preventing millions of illnesses, infections and deaths. “There is a reason that vaccines are widely considered to be the greatest … Read more

COVID-19 damages immune response for some: ‘A big deal’

COVID-19 damages immune response for some: ‘A big deal’

People who contracted COVID-19 before they got vaccinated appear to have damaged a key part of their immune-cell response, Stanford University researchers have found. The study, published last week in the journal Immunity, reported a “major reduction” in the body’s quantity and quality of CD8+ T cells — known as “killer T cells” for their … Read more