If you are having trouble believing that, why not check the public record. There is plenty of reading on this subject.

https://www.kare11.com/amp/article/news/health/covid-19-inte...

https://amp.theatlantic.com/amp/article/620713/

https://www.washingtonpost.com/health/2021/04/22/health-work...

https://www.beckershospitalreview.com/workforce/18-of-health...