Zareen Fatima, Padman Jayaratne, Amjad Arrabi, Candy Rutherford, Daniela Leto, Marek Smieja, Mohammad Rubayet Hasan
We investigated macrolide resistance and P1 genotypes of Mycoplasma pneumoniae during the 2024-2025 outbreak in Hamilton, Ontario, Canada. Macrolide resistance remained stable at ≈10%-20%, but significant shifts in P1 genotype distribution and resistance rates in P1 types occurred, indicating notable changes in M. pneumoniae molecular epidemiology in Ontario since 2011-2012.