They are handling both the control and the sample with gloves. Which is the same way. They are contaminating both. It's useless to argue about how contamination could have theoretically been avoided in an alternate past in hindisght. You don't realize there's a potential contaminant until you do and then you mitigate it. I'm sure they are smart enough now that they realize they are systematically introducing contaminants, they will be able to figure out how to control for it.
reply>They are handling both the control and the sample with gloves. Which is the same way. They are contaminating both.
replyThat's the point. If the control also gets contaminated then they should get >0 results in the control (when basically zero was expected) and that should have raised awareness of this problem pretty much immediately.