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PHOTO: In this undated file photo, a doctor examines a transgender patient during a home care visit. — Getty Images, FILE

When cancer and gender identity collide: Transgender patients fight stigma and disease

PHOTO: A commuter receives a shot of the Johnson & Johnson vaccine for COVID-19 during the opening of MTA's public vaccination program at a subway station in the Brooklyn borough of New York, May 12, 2021. — Brendan Mcdermid/Reuters

We know vaccines are working against new COVID variants. Now scientists are starting to understand why.

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