Patients infected with SARS-CoV-2 develop protective immune responses, mediated by virus-specific T cells and antibodies, shortly after the infection. There is concern, however, that immunity does not persist over time, which may translate into severe COVID-19 upon reinfection.
First, several variants of virus-specific T cells became detectable in blood shortly after COVID-19, but strikingly disappeared after 10-12 weeks.
This story is from the July-August 2022 edition of Scientific India.
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This story is from the July-August 2022 edition of Scientific India.
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