Key Point Rickettsiae are obligately intracellular, Gram-negative bacteria that are transmitted when arthropods feed on humans. An important clue to diagnosing rickettsial disease is the eschar that forms at the site of an arthropod bite. First-line therapy for rickettsial infection…
Key Points Environment and genetics may result in an altered clinical presentation of common viruses in the tropics. Epstein–Barr virus (EBV) can cause infectious mononucleosis, oral hairy leukoplakia, and chronic active EBV infection. EBV can also cause nasopharyngeal carcinoma, Burkitt's…
Key Points Measles is generally a benign, self-limited illness that presents with erythematous, confluent macules and papules that spread cephalocaudally and Koplik spots. Hand, foot, and mouth syndrome, caused by various Coxsackie viruses, is a self-limited illness that presents with…