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Breakthrough COVID-19 infection rate with Indian strain in Single-center Healthcare Workers: A real world data.

SABNIS, R.; Patil, A.; Shete, N.; Rastogi, A. K.

2021-07-07 infectious diseases
10.1101/2021.07.02.21258881 medRxiv
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IntroductionIt is observed that many healthcare workers got COVID-19 infection despite of completing both doses of Covishield vaccine. This study aimed to find real incidence of vaccine breakthrough infection. Material and methodsAll hospital employees, who were fully vaccinated were included in study. Details about their vaccine side effects, infection prior to vaccination, post vaccination infection, severity of infection, hospital and ICU admission were noted. ResultsNone encountered any significant side effects of vaccine. Of the 461 participants - 86 (18.65%) got infection average 38 days (range 14-70days) after vaccination. As per the NIH classification, out of 86, disease was mild in 69(80.2%), moderate in 10(11.62%), severe in 6(6.97%) and critical in 1(1.16%). Of these, 10(11.62%) required hospital admission. Of these 10, 2 were shifted to ICU. Of the 2, One recovered while one died. Thus mortality was 1/86(1.6%). ConclusionBreakthrough infection rate in health care workers was 18.65%. Moderate, severe or critical disease occurred in 19.7% participants even after two doses of vaccine. Mortality due to disease cannot be completely obviated due to vaccine. The vaccine was safe without any significant adverse events.

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