I t used to be a dogma that you either publish or perish, but now it's apply for patents or perish.
Institutions now compete with each other for patents on tests.
The real money is to own the test that is going to be the new standard in medicine. This is why they publicize the slightest advancement even before they publish. They want the business before they are forced to compare their product to the competition. None of these institutions want to tell you how bad their test is they only want to tell you how much better it is than the competition's. The PCR test is only as good as the primers1 you use, and, if you won the patent with bad primers, you are stuck.