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Studies Examine Variant Surging in California, and the News Isn’t Good

C.D.C. Announces $200 Million ‘Down Payment’ to Track Virus Variants

Coronavirus Variants and Mutations

Virus Variant First Found in Britain Now Spreading Rapidly in U.S.

How Scientists Shot Down Cancer’s ‘Death Star’

The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists

New California Variant May Be Driving Virus Surge There, Study Suggests

Inside the B.1.1.7 Coronavirus Variant

Twins with Covid Help Scientists Untangle the Disease’s Genetic Roots

Pfizer Says Its Vaccine Works Against Key Mutation in Contagious Variants

U.S. Is Blind to Contagious New Virus Variant, Scientists Warn

The U.K. Coronavirus Variant: What We Know

The U.K. Coronavirus Variant: What We Know

The Coronavirus Is Mutating. What Does That Mean for Us?

Joan Marks, Doyenne of Genetic Counselors, Dies at 91

A Woman May Have Been Cured of H.I.V. Without Medical Treatment

One Meeting in Boston Seeded Tens of Thousands of Infections, Study Finds

DNA Linked to Covid-19 Was Inherited From Neanderthals, Study Finds

A ‘Cure for Heart Disease’? A Single Shot Succeeds in Monkeys

Genes May Leave Some People More Vulnerable to Severe Covid-19