Take it with a grain of salt ... CDC conducted the study which guarantees that it was fixed and cannot be duplicated. Note that from past investigations, 50% of studies cannot be replicated because the data, specifications, variables, etc. cannot be set up properly to do the study, another 25%, if set up, do not replicate the results. Most studies are fake if they cannot be replicated easily two or three times.
You don’t know what you are talking about. This was a study, not a test.