Add documentation what counts as a case and what as a death

[surfmuggle]

Is your feature request related to a problem? Please describe. It is unclear to me how cases (active infections, deaths) are determined. On https://www.mohfw.gov.in/ i could not find details about that

Describe the solution you'd like If possible document what counts as a case. For example a case is every person with a confirmed positive rtPCR-test result or someone who has antibodies. Some countries also count a close contact to a confirmed case as a case.

Describe alternatives you've considered This information could be added to the readme or as a wiki page in this repository

Additional context New Zealand mid term testing strategy contains this

• Component 1: Testing those with relevant symptoms --> Action: Identification of a positive PCR test precipitates confirmation of positive test status (including whole genome sequencing) and if appropriate, declaration of a case.
• And on page 8: Whole genome sequencing (WGS) of isolates ,,, may result in reassessment ... and reclassification of cases.

My understanding is that in new zealand a positive PCR test is reviewed by trying to find the whole virus. If this fails the positive test result is classified as a false positive. As you probably know the positive predictive value of a PCR test depends on its sensitivity, specificity and the prevalence. These parameters determine how many false positive occur. On top of that a PCR test can be positive up to 82 days following recovery

[ravi-maithrey]

What i can see is the mohfw itself isnt releasing too many details. before we classify anything, we need further info on how these are being classified at the source