This report describes vaccine effectiveness of COVID-19 booster doses after one dose of the Johnson & Johnson COVID-19 vaccine against emergency department, urgent care visits, and hospitalizations.
This report describes an increase in use of at-home rapid COVID-19 antigen tests between the Delta and Omicron predominant periods during August 2021 to March 2022.
This report describes effectiveness of mRNA COVID-19 vaccination in preventing COVID-19 associated invasive mechanical ventilation and death after receiving 2 or 3 vaccine doses.
This report describes vaccination with a primary series of the Pfizer-BioNTech mRNA COVID-19 vaccine as effective in protecting against Omicron infection among children and adolescents.
This report describes mRNA COVID-19 vaccine effectiveness in preventing emergency department and urgent care encounters as well as hospitalizations among children and adolescents.
This report describes how Omicron infection resulted in high transmission among household contacts. Prevention strategies are important to reduce transmission in households.
This report describes how overall pediatric emergency department visits decreased in 2020, 2021, and January 2022 compared with 2019 but COVID-19 visits predominated.