A new study in Emerging Infections Diseases describes 5 children who had Rocky Mountain spotted fever (RMSF) and manifested clinical symptoms similar to multisystem inflammatory syndrome (MIS-C) in Mexico. Although the number of cases was small, it may be an important differential because Rocky Mountain spotted fever can progress rapidly to death or severe illness if appropriate antimicrobial drug therapy is not delivered within the first 5 days after illness onset. Among the 5 cases, …
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