In the time of the Plague, or the more anodyne 'virus[ and those binary calculations

Do I have it, or don't I?

Is it inside me or out there

Have I been poisoned or am I cured

 Undecidability reigns in these terrifying times especially for one's children

or grand parents

In the UK the best and most reliable source for information is the NHS

https://www.nhs.uk/conditions/coronavirus-covid-19/