Thread:
A study by Sir Ganga Ram Hospital (non-peer reviewed) in Delhi to evaluate the effectiveness of #covishield #vaccine found that its single-shot offered almost no protection against symptomatic #COVID19 infection.
1/5
@RajeevJayadevan
The incidence of symptomatic infection in study subjects after 21 days of receiving the first dose was 12.3%, as compared to 13.9% in the unvaccinated group.
#Delta
@SerumInstIndia @AmbarishSatwik
2/5
However, vaccine effectiveness for 2 doses given at a median interval of 30 days increased to 28% for symptomatic infections, 67% for moderate to severe disease, 76% for supplemental-oxygen-therapy & 97% for deaths.
@DrLahariya
3/5
Another noteworthy finding is that previous #COVID19 infections were significantly protective against all studied outcomes, with an effectiveness of 93% against symptomatic infections, 89% against moderate to severe disease and 85% against supplemental oxygen therapy.

4/5
A total of six deaths (5 in the unvaccinated, 1 in the one dose cohort) occurred during the study. The study was conducted over 4296 individuals between March & May this year.
@ProfSomashekhar
5/5

ejinme.com/article/S0953-…

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More from @AshishOnGround

16 Jun
#Thread
Apollo Hospital's Pan India study of #Breakthrough infections over 31,621 Healthcare workers showed that only 4.28% (1,335) subjects got infected post-vaccination. @RajeevJayadevan
1/5
#vaccination
The finding also showed only 90 cases (0.28%) required hospitalization, while merely 3 (0.009%) suffered severe complications and progressed to ICU admission. @DrLahariya @satya_yadav
2/5
#VaccinesWork
The most important finding of the study was that there were no deaths in case of COVID infection after vaccination. Many other studies of breakthrough infections have also noted no deaths post-vaccination. @docanoopmisra
3/5
#VaccinesSaveLives
Read 5 tweets
14 Jun
#BREAKING Madhukar Rainbow chain of Children Hospital to become second vaccination centre in Delhi where #SputnikV will arrive for mass #COVID19 vaccination drive, which is expected to start by June 20.
However, other hospitals of this chain will receive #Sputnik by tomorrow.
The Russian vaccine will dispatch from Dr Reddy's at 13 hospitals of Madhukar Rainbow group based in Southern Indian states will receive the vaccine tomorrow and from there, a consignment for Delhi will be sent to Delhi. It is expected to arrive by June 19. #Sputnikvaccine
"We will start administering Russian Covid-19 #vaccine Sputnik V tentatively by 20 June to the eligible people. The appointment slots can be booked via the Cowin portal," said Dinesh Vashist
VP- North India of Madhukar Rainbow.
#COVIDVaccination
Read 4 tweets

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