Thread by @GorwayGlobal

Genome sequencing and Variants of Concern in India.
it appears to me that INSACOG - the Indian SARS-CoV-2 Genomic Consortium - has a poor understanding of Data. In their report attached here:
dbtindia.gov.in/sites/default/… there is a table that I find very puzzling.

But look at this table - it is on page 4 and is dated 5 May 2021. Focus for a moment on the total. It seems to be purely numerator data. I dont get a sense of how many samples in total were looked at.

Summarising just the country-wide picture I conclude that. 05 the 3900 samples in which genome sequencing showed a Variant of Concern (VoC) or a variant of Interest (VoI) the breakdown is as follows:
B1.617 - 1,850 ("Indian variant")
B1.117 -1,922 ("UK variant")
B.1.351 - 1,27

But what is the proportion of TOTAL samples that was B.1.617? or B.1.117? Indeed how many samples in total were studied for genome sequencing? I cannot tell from this report. Interestingly, There is an interesting map on page 5. It is as pretty as it is difficult to interpret

Roughly Punjab looks almost 75% B1.117, Maharashtra is is almost a quarter B1.617, Kerala looks 1/4th B1.117 and a bit less than that B.1.617. But numbers would have been nice.

Finally the time sequence. This looks like it is the position as on 5th May 2021. INSACOG started only on 2021 and there is no time-stamped data on the number of samples sequenced each week or month.

Meanwhile the UK is an example of great practice in genome sequencing.
cen.acs.org/analytical-che…

COG-UK the UK's genome sequencing consortium has sequenced 460,000 samples and regularly publishes its findings. cogconsortium.uk

Among COG-Uk's finest outputs (the regular reports to SAGE are boring) is this web-based tool that lets you track how each variant or mutation has changed in terms of prevalence over 2 dimensions - time and geography (These are real dimensions unlike #Sadguru's made-up dimensions

Vist this site
covid19.sanger.ac.uk/lineages/model…
For B1.117 the growth has been phenomenal. It is now the main variant but the incidence has fallen away.