Aerococcus is a genus in the phylum Bacillota (Bacteria).[1] The genus was first identified in 1953 from samples of air and dust as a catalase-negative, gram-positive coccus that grew in small clusters.[2] They were subsequently found in hospital environments and meat-curing brines.[3] It has been difficult to identify as it resembles alpha-hemolytic Streptococcus on blood agar plates and is difficult to identify by biochemical means.[4] Sequencing of 16S rRNA has become the gold standard for identification, but other techniques such as MALDI-TOF have also been useful for identifying both the genus and species.[4]