Because CDC"
“We’re letting you know that several people who attended the [Epidemic Intelligence Service] Conference have tested positive for COVID-19”...
CDC meeting, intended to mark covid progress, sees virus cases of its own https://www.washingtonpost.com/health/2023/04/28/covid-cases-cdc-conference/
CDC meeting, intended to mark covid progress, sees virus cases of its own

The conference for disease detectives hadn’t been held in person for several years because of the pandemic.

The Washington Post
@jeffjarvis I'm just glad it's over.