COVID-19 illness and vaccines pose no risk to blood donation supply
A unique Kaiser Permanente study confirms the safety of using blood donated from people who have been vaccinated against or who have had COVID-19.
COVID-19 patients did better if they had booster vaccination
A large Kaiser Permanente analysis of COVID-19 patients confirms the value of vaccination, finding higher rates of hospitalization and advanced medical care for COVID-19 patients who were unvaccinated, were vaccinated but not boosted, or who had an additional health condition such as obesity or heart disease.
Analysis confirms racial disparities in COVID-19 infection
An analysis of Kaiser Permanente members in Northern California early in the COVID-19 pandemic found racial and ethnic disparities in the likelihood of testing positive for the coronavirus, but no significant disparities in mortality among those who were hospitalized.
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.
