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Mauricio Hernández-Ávila¹, Waldo Vieyra-Romero², Héctor Gutiérrez-Díaz³

¹Dirección de Prestaciones Económicas y Sociales, Instituto Mexicano de Seguro Social. Ciudad de México, México. mhernan.salud@gmail.com.

Salud Publica De Mexico

|January 31, 2022

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Summary

The SARS-CoV-2 epidemic significantly impacted Mexican Institute of Social Security (IMSS) workers, causing an excess of temporary work incapacity for respiratory diseases (ITT-ER). This analysis highlights the utility of ITT-ER data for emerging disease surveillance.

Area of Science:

Epidemiology
Public Health
Occupational Health

Background:

The COVID-19 pandemic, caused by SARS-CoV-2, presented significant public health challenges globally.
Understanding the epidemic's impact on the workforce is crucial for economic stability and public health strategies.

Purpose of the Study:

To describe the behavior of the SARS-CoV-2 epidemic among workers affiliated with the Mexican Institute of Social Security (IMSS).
To analyze temporary work incapacity for respiratory diseases (ITT-ER), hospitalizations, and deaths related to SARS-CoV-2.
To estimate the attack rate (TA) and relative risks (RR) for ITT-ER, hospitalization, and death.

Main Methods:

Analysis of temporary work incapacity for respiratory diseases (ITT-ER), hospitalizations, and deaths from March 1 to December 31, 2020.

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Estimation of SARS-CoV-2 attack rate (TA) and relative risks (RR) for ITT-ER, hospitalization, and death.

Comparison of ITT-ER data with the 2015-2019 period to identify regional variations.

Main Results:

8.8% of IMSS-affiliated workers (n=1,730,334) received at least one ITT-ER.
The TA was higher in women; both sexes showed lower TA in the >60 age group.
Relative risks for hospitalization and death were higher in men and increased with age. Durango, Tamaulipas, and Nuevo León showed higher RR for ITT-ER compared to the rest of the country.

Conclusions:

The SARS-CoV-2 epidemic had substantial repercussions on IMSS-affiliated workers, with an excess of ITT-ER 4.6 times higher than expected.
Approximately one million SARS-CoV-2 cases were observed among this population.
Temporary work incapacity for respiratory diseases (ITT-ER) data can serve as an additional tool for epidemiological surveillance of emerging diseases.