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T Cells Triggered by Common Cold Fend Off Covid in Study

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Covid May Look Better After Omicron Wave: Johns Hopkins
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High levels of protective immune cells that fight some common colds also made people less likely to contract Covid-19 in a study.

Researchers found higher levels of T cells against certain colds in people who didn’t develop Covid while living with someone who had the disease, according to a study released Monday by the U.K.’s Imperial College London. The prior illnesses were caused by other coronaviruses related to SARS-CoV-2.