Risk factors for transmission of Middle East respiratory syndrome coronavirus infection during the 2015 outbreak in South Korea.

Background: Transmission heterogeneity was observed during the 2015 South Korean outbreak of Middle East respiratory syndrome coronavirus (MERS-CoV) infection. Only 22 of 186 cases transmitted the infection, and 5 super-spreading events caused 150 transmissions. We investigated the risk factors for MERS-CoV transmission.

Outbreak of Mycobacterium massiliense infection associated with intramuscular injections.

Twelve strains of a rapidly growing Mycobacterium species were isolated from an outbreak associated with intramuscular injections of an antimicrobial agent and were identified by comparative sequence analysis of rpoB and hsp65. These isolates were identified as Mycobacterium massiliense (100% similarity).