Catch a cold, be more protected from Covid?
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Covid-resistant people point way to universal coronavirus vaccine
Illustration of a T cell targeting SARS-CoV-2 particles Many groups worldwide are trying to develop vaccines that protect against a wide range of coronaviruses and prevent another pandemic. These efforts have now been boosted by the discovery that some healthcare workers had pre-existing...

Pre-existing polymerase-specific T cells expand in abortive seronegative SARS-CoV-2 - Nature
Seronegative healthcare workers with an innate signature of infection preferentially expand pre-existing T cells targeting the conserved replication transcription complex of SARS-CoV-2 in abortive infection.
