Population-level estimates show wide age range of adults hospitalized with COVID-19
A JAMA study, using data on patients hospitalized in March from all 21 Kaiser Permanente Northern California hospitals, is one of the first U.S. studies to look at overall hospitalization admissions of COVID-19 patients.
COVID-19 vaccination was effective in children, adolescents during 2021
A large study of U.S. children and teens who received the Pfizer/BioNTech COVID-19 vaccine finds that it was effective through much of 2021, but waned over time, especially as the omicron variant became dominant in 2022. Teens who received a booster dose regained some protection.
