Isolation and testing belong to analytical (chemistry) subjects. Unfortunately, non-chemistry-related subject experts are doing this work and mistakenly labeled it as isolation and testing. This is where the problem is.
Scientifically speaking, the virus has never been isolated, and by extension, relevant and valid tests cannot be developed or have never been developed (link).
Non-chemistry/analytical (chemistry) science experts have difficulty understanding this issue, let alone solving it. Please seek help from the people in the areas of testing (analytical or chemical) science.
The issue is not as complicated as presumed or presented. Viruses and pandemics will disappear quickly.