Occupational bioaerosol exposure and its effect on respiratory patterns among clinical laboratory workers in Mexico City

Authors

  • Eng. Eduardo Alfonso Gutiérrez-Basulto National Polytechnic Institute image/svg+xml Author
  • MD. Montserrat Noemi González-Mellado College for the Study of Cellular Metabolism and Nutrition , National Polytechnic Institute image/svg+xml Author
  • Eng. Francisco Javier Barrón-Santos National Polytechnic Institute image/svg+xml Author

Keywords:

Bioaerosols, Spirometry, Environmental microbial load, Clinical laboratory, Personal protective equipment

Abstract

This analytical and correlational study evaluated bioaerosol exposure and its effect on respiratory function in 40 workers at a clinical laboratory in Mexico City. Microbial load (CFU/m³) was measured in nine work areas, and spirometric parameters (FVC and FEV1) and the use of personal protective equipment (PPE) were assessed.

The highest concentrations of bioaerosols were detected in the Parasitology (573 CFU/m³), Administration (375 CFU/m³), Microbiology (259 CFU/m³), and Sample Reception (253 CFU/m³) areas. Although these figures do not exceed the WHO limit (1,000 CFU/m³), they exceed European comfort standards (200 CFU/m³).

No statistically significant association was found between bioaerosol load and spirometric impairment. However, a significant relationship (Chi-square = 4.337, p = 0.037) was identified between the systematic use of PPE and the reduction of respiratory risk, concluding that personal protection is crucial for occupational safety.

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Author Biographies

  • Eng. Eduardo Alfonso Gutiérrez-Basulto, National Polytechnic Institute

    .

  • MD. Montserrat Noemi González-Mellado, College for the Study of Cellular Metabolism and Nutrition, National Polytechnic Institute

    Medical Doctor, Justo Sierra University. Master of Science in Occupational Health, Safety, and Hygiene, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional. Member of the Biomedicine and Occupational Health Laboratory, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional. Registered General Practitioner with the "Colegio para el Estudio del Metabolismo y Nutrición Celular A.C."

  • Eng. Francisco Javier Barrón-Santos, National Polytechnic Institute

    Environmental Engineer and holds a Master of Science degree in Environmental and Sustainability Studies from the Instituto Politécnico Nacional. In the institutional and academic sphere, he is affiliated with the Postgraduate Studies and Research Section of the Escuela Nacional de Medicina y Homeopatía at the Instituto Politécnico Nacional, where he serves as an adjunct professor and teaches in the Master of Science program in Occupational Health, Safety, and Hygiene.

Published

2026-11-13

Issue

Section

Memoria - Resultados Originales

How to Cite

Occupational bioaerosol exposure and its effect on respiratory patterns among clinical laboratory workers in Mexico City. (2026). Revista Red De Investigación En Salud En El Trabajo, 9(S7), 1-3. https://rist.zaragoza.unam.mx/act/index.php/rist/article/view/26