COVID in California: Reinfection heightens risk of other health problems, study finds

A new type of vaccine protects against a variety of betacoronaviruses including the one that caused the COVID-19 pandemic and COVID’s variants, in mice and monkeys, a Caltech study found. Betacoronaviruses are a subset of coronaviruses that infect humans and animals. The study, published in the journal Science on Tuesday, from researchers in the laboratory of Caltech’s Pamela Bjorkman, professor of biology and bioengineering, found that the new vaccine is broadly protective. It works by presenting the immune system with spike protein pieces from SARS-CoV-2 and seven other SARS-like betacoronaviruses, attached to a protein nanoparticle structure, to induce production of cross-reactive antibodies, Caltech said.