Why name the researchers that got sick? Even if one of them is the source for COVID, which really isn't clear from this, I don't think they deserve the harassment articles like this are bound to cause.
You boil it all down and the article is just rehashing everything for the hundredth time, along with claiming "US government sources say" and dropping the three names to make it appear to be credible.
There's no details about how these government sources know this.
It also seems to be a rehashing of a New York Times story from a year or so ago which also claimed that there were three workers that were sick (without having any details) and was written by the same journalist that wrote the Iraq/Niger Yellow cake Uranium story back around 2002 that led us into the War in Iraq (and the same plot line that led to the Valerie Plame/Joseph Wilson/Dick Cheney affair).