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. 2025 Sep 16:traf105.
doi: 10.1093/trstmh/traf105. Online ahead of print.

Increase in Mycoplasma pneumoniae infections in 2024: experience of a tertiary-care hospital from Porto Alegre, Brazil

Guilherme Geraldo Lovato Sorio  1 , Gabriela Luchiari Tumioto Giannini  2 , Muriel Gorges  1 , Luiza Martinez Perez  1 , Renata Dortzbacher Feil Klafke  1 , Erik Menezes Martins  1 , Letícia Camargo Marinho  1 , Gabriela Pereira Flores  1 , Cristiane Tejada da Silva Kawski  1 , Andressa Braga  1 , Jaysa Pizzi  1 , Beatriz Arns  1 , Alexandre Prehn Zavascki  1   3
Affiliations

Increase in Mycoplasma pneumoniae infections in 2024: experience of a tertiary-care hospital from Porto Alegre, Brazil

Guilherme Geraldo Lovato Sorio et al. Trans R Soc Trop Med Hyg. .

Abstract

Background: Mycoplasma pneumoniae infections declined globally during the COVID-19 pandemic but resurged in 2023, with no data from Latin America.

Methods: We conducted a time-series analysis of patients tested with a multiplex PCR panel at a tertiary hospital in Brazil (April 2022-December 2024).

Results: No cases were identified in 2022, two occurred in 2023 and 132 in 2024. Overall, 85% occurred in children; 68.2% were hospitalized; 18.9% required intensive care; and one patient died.

Conclusions: This is the first report of a postpandemic M. pneumoniae outbreak in a Latin American country, underscoring the need for improved surveillance.

Keywords: Mycoplasma pneumoniae; COVID-19; outbreaks; pneumonia.

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