Cold agglutinin disease following SARS-CoV-2 and Mycoplasma pneumoniae co-infections

During coronavirus disease 2019 (COVID-19) pandemic, coinfections with other viral infections are not uncommon, but concomitant atypical bacteria are rare. Herein, we describe a young female COVID-19 patient who developed acute cold agglutinin disease secondary to Mycoplasma pneumoniae. Using an azithromycin-containing COVID-19 therapeutic regimen, both pneumonia and anemia resolved uneventfully.