Immunology

How B cells recognize new variants of SARS-CoV-2

B cells are part of the immune system's memory. Their memories of previous infections or vaccinations provide the template for antibodies that have a protective effect the next time they come into contact with a pathogen.

Vaccination

Three more African nations roll out malaria vaccine

Three more African countries have joined a rollout of malaria vaccines targeting millions of children in a continent that accounts for 95 percent of malaria deaths, the UN said Thursday.

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