Thread by @epigiri

This tweet thread is about the results from the second serosurvey done in the #Karnataka state. Ahead of sharing the link, some caveats first.
1. The @DHFWKA has used the data from this round of serosurvey in late March to update testing and surveillance strategies.

1 of N

2. The study found Lower levels of IgG seroprevalence, mostly due to antibody waning.
3. A substudy was done to confirm the antibody waning. This study was delayed due to rapid surge of cases in April.
4. We found near 0 prevalence of active cases during mid-February 2021.
2/n

5. There was a subsequent surge seen in Karnataka state due to a mix of alpha, delta which was picking up speed in April, and a large susceptible population were infected.
6. Results from the substudy on antibody waning was necessary for releasing the final report & paper.
3/n

7. Brilliant work done by Dr Lalitha Hande and team mobilizing the NACO staff to do the survey while Dr Padma and the team at SSU did all the hard work in getting the survey implmented. Rajesh and Siva were the soul and energy behind every step of survey. A truly great team.
4/n

Contacts for discussion on the second round of the serosurvey

Dr R Padma: State Surveillance Unit SSU <[e-mail]>

Dr Rajesh Sundaresan: <[e-mail]>

Dr Shiva Athreya : <[e-mail]>

5/n

Here is the link to the preprint: medrxiv.org/content/10.110…

Going forward, sentinel surveys can help identify districts that need better testing, reporting, and clinical management. The Karnataka state was far from attaining population levels of immunity during the survey.
6 of N

The results from such surveys are useful for prioritizing the areas that need to step up vaccination coverage and enforce public health measures to prevent the spread of #COVD19. Analysis at district level can identify priority areas needing actions.

https://twitter.com/epigiri/status/1422654254066671618?s=20

n/N

These tweets covered in here deccanherald.com/state/top-karn…