This article does not mention the WHO offered tests to the US before the CDC decided it should make its own[1]. This alone should have been enough to bring impeachment charges against public officials, for criminal neglect. If the WHO had proven these in China, and you have no other alternative, it make sense to do both 1. buy tests you know are in active use and 2. make your own tests if needed. Someone at the CDC m…
To clarify. The WHO did not offer the US tests. The Politico article just says that the US was not on the list of countries it offered tests. It never offers the US tests, because it has national labs that can make their own tests. The WHO only gives tests to countries who do not have a national infrastructure of their own to build tests. But the WHO did recommend the Berlin tests, as it had no false positives, and w…
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6988269/
This was published on January 23, and it contains all the information you need to establish this kind of test in your own lab. And while I'm not an expert in this area, the controls done to ensure avoiding false positives based on other viruses seem pretty thorough to me. And this validation is the part that I would suspect to be one of the more time-consuming and important aspects.