Resumen: We report an unusual case of myopericarditis caused by Rickettsia sibirica mongolitimonae. Because of increasing reports of Rickettsia spp. as etiologic agents of acute myopericarditis and the ease and success with which it was treated in the patient reported here, rickettsial infection should be included in the di erential diagnosis for myopericarditis Idioma: Inglés DOI: 10.3201/eid2312.170293 Año: 2017 Publicado en: Emerging Infectious Diseases 23, 12 (2017), 2091-2092 ISSN: 1080-6040 Factor impacto JCR: 7.422 (2017) Categ. JCR: INFECTIOUS DISEASES rank: 4 / 88 = 0.045 (2017) - Q1 - T1 Categ. JCR: IMMUNOLOGY rank: 17 / 155 = 0.11 (2017) - Q1 - T1 Factor impacto SCIMAGO: 3.278 - Epidemiology (Q1) - Microbiology (medical) (Q1) - Infectious Diseases (Q1)