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Reconstructing the COVID-19 epidemic in Delhi, India: infection attack rate and reporting of deaths
Margarita Pons-Salort; Jacob John; Oliver J Watson; Nicholas F Brazeau; Robert Verity; Gagandeep Kang; Nicholas C Grassly.
Afiliación
  • Margarita Pons-Salort; Imperial College London
  • Jacob John; Christian Medical College, Vellore
  • Oliver J Watson; Imperial College London
  • Nicholas F Brazeau; Imperial College London
  • Robert Verity; Imperial College London
  • Gagandeep Kang; Christian Medical College, Vellore
  • Nicholas C Grassly; Imperial College London
Preprint en En | PREPRINT-MEDRXIV | ID: ppmedrxiv-21254092
ABSTRACT
India reported over 10 million COVID-19 cases and 149,000 deaths in 2020. To estimate exposure and the potential for further spread, we used a SARS-CoV-2 transmission model fit to seroprevalence data from three serosurveys in Delhi and the time-series of reported deaths to reconstruct the epidemic. The cumulative proportion of the population estimated infected was 48.7% (95% CrI 22.1% - 76.8%) by end-September 2020. Using an age-adjusted overall infection fatality ratio (IFR) based on age-specific estimates from mostly high-income countries (HICs), we estimate that 15.0% (95% CrI 9.3% - 34.0%) of COVID-19 deaths were reported. This indicates either under-reporting of COVID-19 deaths and/or a lower age-specific IFR in India compared with HICs. Despite the high attack rate of SARS-CoV-2, a third wave occurred in late 2020, suggesting that herd immunity was not yet reached. Future dynamics will strongly depend on the duration of immunity and protection against new variants.
Licencia
cc_by_nc_nd
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-MEDRXIV Tipo de estudio: Experimental_studies / Observational_studies Idioma: En Año: 2021 Tipo del documento: Preprint
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-MEDRXIV Tipo de estudio: Experimental_studies / Observational_studies Idioma: En Año: 2021 Tipo del documento: Preprint