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Diabetes Metab Syndr ; 15(5): 102238, 2021.
Article in English | MEDLINE | ID: mdl-34364299

ABSTRACT

AIMS: To evaluate the dose-effect association between COVID-19 vaccination and probability of turning RT-PCR positive and to assess the correlation between disease severity and vaccination status. METHODS: A single centre cross-sectional study was conducted amongst 583 individuals presenting to COVID-19 testing clinic and 55 hospitalized COVID-19 patients. Vaccination status was assessed by the number of doses and duration since the last dose. Disease severity was evaluated by the requirement of hospitalisation and ICU admission/death. The association between the vaccination status and development of disease and its severity were statistically analyzed. RESULTS: The mean age of the population was 36.6 years and 82.6% had no comorbidities. The odds of turning RT-PCR positive was 0.17(95% CI: 0.11-0.27) among the clinical suspects who had taken both doses of the vaccine at least 14 days before (fully vaccinated). The odds of hospitalisation was 0.12(95% CI: 0.03-0.45) and ICU admission/death was 0.07(95% CI: 0.01-0.36) among fully vaccinated individuals. The protective role of vaccination was observed to start 14 days after receiving the first dose. CONCLUSIONS: COVID-19 vaccination provides dose-dependent protection against the development of the disease. It also lowers the risk of hospitalisation and ICU admission/death in RT-PCR positive patients in a dose-dependent manner.


Subject(s)
COVID-19 Vaccines/administration & dosage , COVID-19/pathology , COVID-19/prevention & control , Adult , COVID-19/diagnosis , COVID-19/epidemiology , COVID-19 Testing , Cross-Sectional Studies , Dose-Response Relationship, Drug , Drug Administration Schedule , Female , Hospitalization/statistics & numerical data , Humans , Immunization Schedule , India/epidemiology , Male , Middle Aged , Severity of Illness Index , Time Factors , Treatment Outcome , Vaccination/statistics & numerical data , Vaccine Potency , Young Adult
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