Predictors of symptomatic laboratory-confirmed SARS-COV-2 reinfection

  1. Efrén Murillo-Zamora
  2. Carlos M. Hernandez-Suarez
  3. Agustin Lugo-Radillo
  4. Felipe Aguilar-Sollano
  5. Oliver Mendoza-Cano
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Abstract

Objective

To identify factors predicting symptomatic laboratory-positive SARS-COV-2 reinfection.

Method

We conducted a nationwide retrospective cohort study and data from 99,993 confirmed cases of COVID-19 were analyzed.

Results

The overall risk of reinfection (28 or more elapsed days between both episodes onset) was 0.21%, and older subjects and those with mild primary disease were at reduced risk of reinfection. Healthcare workers and immunosuppressed or renal patients had at greater risk of SARS-COV-2 reinfection.

Conclusions

If replicated in other populations, these results may be useful to prioritize efforts focusing on the reduction of SARS-COV-2 spread and the related burden.

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