Cluster of drug-resistant mpox identified in five states, US officials report

U.S. health officials have identified a cluster of cases caused by an mpox variant that are resistant to Siga Technologies' antiviral tecovirimat, branded as TPOXX, in five U.S. states, federal and state researchers reported on Thursday. The cases involved a total of 18 individuals infected with clade II mpox between Oct. 6, 2023, and Feb. 15, 2024, who had never taken the treatment before, according to the report published in the Centers for Disease Control and Prevention's Morbidity and Mortal