Diseases, Conditions, Syndromes

Researchers find immune response to COVID strengthens over time

Immunity from COVID-19 appears to gather strength with more time between vaccination and infection, a new laboratory study from researchers at Oregon Health & Science University suggests. The findings carry implications for ...

Health

Vaccine misinformation spawns 'pure blood' movement

Vaccine skeptics blocking transfusions for life-saving surgeries, Facebook groups inciting violence against doctors and a global search for unvaccinated donors—COVID-19 misinformation has bred a so-called "pure blood" movement.

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