Assays for hepatitis B surface antigen (HBsAg) are the most frequently used tests to detect HBV infection. Vaccination for HBV can produce transiently detectable levels of HBsAg in patients.
Among adults aged 75 and older, RSV was linked to a substantial burden of hospitalizations, ICU admissions, and in-hospital deaths before vaccines were available.
Paxlovid may offer marginal benefits for low-risk children with COVID-19; however, among high-risk children with COVID-19, Paxlovid is a safe oral option.