covid-biotech-conference

id: title: Boston biotech conference led to 245,000 Covid-19 cases across US, genetic fingerprinting shows slug: covid-biotech-conference date: 2020-12-12 9:41:00 AM format: Narrative url: https://www.cnn.com/2020/12/11/health/superspreader-covid-boston-biotech-conference/index.html duration:

Researchers have tracked almost a quarter-million cases of COVID back to a single conference in February 2020 which was attended by 200 people.