Older people who received smallpox vaccinations may yet have some immunity, researchers say. Healthy children and adults generally do not become severely ill.
Tag: Antibodies
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The Michigan Mink Mystery: How Did an Interspecies Outbreak Unfold?
The puzzling coronavirus cases highlight ongoing surveillance challenges and blind spots.
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The Coronavirus Has Infected More Than Half of Americans, the C.D.C. Reports
But prior infection does not guarantee protection from the virus, officials said, and Americans should still get vaccinated and boosted.
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Inside a Campaign to Get Medicare Coverage for a New Alzheimer’s Drug
The Alzheimer’s Association has pushed relentlessly to get broad access to Aduhelm, despite safety risks and uncertain evidence that it helps patients.
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Trying to Solve a Covid Mystery: Africa’s Low Death Rates
The coronavirus was expected to devastate the continent, but higher-income and better-prepared countries appear to have fared far worse.