SARS-CoV-2 variants do not substantially affect CD4+ and CD8+ T cell responses, study shows
Researchers from California in the United States have conducted a study showing that important adaptive immune responses to infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are not affected by four recently emerged variants of the virus.
The SARS-CoV-2 virus is the agent responsible for the coronavirus disease 2019 (COVID-19) pandemic that continues to pose a threat to global public health and has now claimed the lives of more than 2.55 million people.
Several studies have demonstrated that mutations present in recently emerged variants of SARS-CoV-2 confer resistance to neutralizing antibodies (the humoral immune response) in sera from convalescent and vaccinated individuals.
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Scientists expect COVID-19 will become an endemic disease like the flu or common cold. But as vaccinations increase and natural immunity builds, they expect the coronavirus to spread mostly among children and cause far less severe illnesses.
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