Fatal Rocky Mountain Spotted Fever along the United States–Mexico Border, 2013–2016
Naomi A. Drexler
, Hayley Yaglom, Mariana Casal, Maria Fierro, Paula Kriner, Brian Murphy, Anne Kjemtrup, and Christopher D. Paddock
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (N.A. Drexler, C.D. Paddock); Arizona Department of Health Services, Phoenix, Arizona, USA (H. Yaglom, M. Casal); Imperial County Public Health Department, El Centro, California, USA (M. Fierro, P. Kriner); County of San Diego Health and Human Services Agency, San Diego, California, USA (B. Murphy); California Department of Public Health, Sacramento, California, USA (A. Kjemtrup)
Figure. Histologic slides of autopsy tissue from patients who acquired Rocky Mountain spotted fever in northern Mexico and died at hospitals in the United States, 2013–2016. A) Immunohistochemical stain of Rickettsia rickettsii antigens (red) in inflamed blood vessel adjacent to eccrine gland in a skin biopsy specimen from case-patient 1. Immunoalkaline phosphatase with naphthol-fast red and hematoxylin counterstain; original magnification ×50. B) Diffuse pulmonary capillaritis in case-patient 4. Hematoxylin and eosin stain; original magnification ×50. C) Vasculitis involving a small blood vessel in a peripheral nerve of case-patient 4. Hematoxylin and eosin stain; original magnification ×100.
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