People who build up high levels of immune cells from coronaviruses that cause the common cold could have some protection against COVID-19, according to a new study.
People with higher levels of T cells from the common cold were less likely to become infected with COVID-19, the researchers found.
The T cells researched in the study are considered “cross-reactive” and can recognize the proteins of SARS-CoV-2. They offer protection by targeting proteins inside the SARS-CoV-2 virus, rather than the spike proteins on the surface that allow the virus to invade cells. “New vaccines that include these conserved, internal proteins would therefore induce broadly protective T cell responses that should protect against current and future SARS-CoV-2 variants,” Ajit Lalvani, MD, the senior study author and director of Imperial’s Respiratory Infections Health Protection Research Unit, said in the statement.
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