Compared with patients who were vaccinated and boosted, unvaccinated patients with COVID-19 had a 21-fold greater risk for hospitalization, data suggest.
Maternal vaccination with two doses of the mRNA COVID-19 vaccine was 95% effective against infant infection from the Delta variant, and 45% effective against infant infection from the Omicron variant.
Regular physical activity may help lower the risk for COVID-19 infection and reduce its severity, according to pooled data from more than 1.8 million adults.
Patients with immunomodulated inflammatory diseases are not at higher risk for breakthrough COVID-19 infections, apart from those on anti-CD20 therapy, according to findings from several new studies.