This episode discusses four MMWR COVID-19 reports. The first report presents five factors CDC recommends that communities and organizations consider when deciding how to best prevent COVID-19. The second report describes a COVID-19 outbreak after multiday gatherings in Massachusetts where most cases were breakthrough infections caused by the Delta variant among fully vaccinated people. The third describes that serious adverse reactions are rare after COVID-19 vaccination among 8.9 million adolescents. The last report describes lower COVID-19 vaccination rates among some health care staff in long-term care facilities.