published Tuesday in the CDC’s Morbidity and Mortality Weekly Report, said more than 1,100 people from at least four states were ultimately exposed to the virus by those who attended the events. "This investigation underscores the impact of secondary SARS-CoV-2 transmission during large events such as camps and conferences when COVID-19 prevention strategies, including vaccination, masking, physical distancing, and screening testing, are not implemented," the CDC report concluded.The five-day overnight camp, which was held between June 13-17, included teenagers from a church organization with locations across western Illinois, Iowa and Missouri, the report said.