Alliance for Pandemic Preparedness

January 13, 2021

Epidemiology of COVID-19 in Mexico, Symptomatic Profiles and Presymptomatic People

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Epidemiologic data collected between June and September 2020 from more than 480,000 outpatients with RT-PCR-confirmed SARS-CoV-2 infection in Mexico indicated that there was a high incidence of COVID-19 among working-age people (41%), with young adults (aged 20-40 years) the most affected. More than half of the people who tested positive (53%) had contact with SARS-CoV-2 positive individuals, mostly family members (56%) and co-workers (29%). People who worked as deliverers (OR=1.4) or informal traders (OR=1.3) had a higher risk of COVID-19. 13% of SARS-CoV-2 infections were detected in presymptomatic patients. 

Fernández-Rojas et al. (Jan 2021). Epidemiology of COVID-19 in Mexico, Symptomatic Profiles and Presymptomatic People. International Journal of Infectious Diseases. https://doi.org/10.1016/j.ijid.2020.12.086