Testing… Testing… (part 1)

The relationship between viral tests and COVID ‘cases’

In my newsletters I often refer to the sensible folk who realise that (all things being equal) more testing means more cases, which is why I tend to use rates such as COVID cases per 100 viral tests. Things are not always equal, however, and crazy stuff happens like people changing their attitude to self-testing. A mutating virus we can deal with, chang…