Rocky Mountain Spotted Fever in Panama: a Cluster Description

Maribel Tribaldos, Gorgas Memorial Institute for Health Studies
Yamitzel Zaldivar, Gorgas Memorial Institute for Health Studies
Sergio Bermudez, Gorgas Memorial Institute for Health Studies
Franklyn Samudio, Gorgas Memorial Institute for Health Studies
Yaxelis Mendoza, Gorgas Memorial Institute for Health Studies
Alexander A. Martinez, Gorgas Memorial Institute for Health Studies
Rodrigo Villalobos, Hospital Santo Tomás
Marina Eremeeva, Georgia Southern University
Christopher D. Paddock, National Center for Emerging and Zoonotic Infectious Diseases
Kathleen Page, Johns Hopkins University School of Medicine
Rebecca E. Smith, Gorgas Memorial Institute for Health Studies
Juan Miguel Pascale, Gorgas Memorial Institute for Health Studies

This is an open-access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Rocky Mountain spotted fever (RMSF) is a tick-borne infection caused by Rickettsia rickettsii. We report a cluster of fatal cases of RMSF in 2007 in Panama, involving a pregnant woman and two children from the same family. The woman presented with a fever followed by respiratory distress, maculopapular rash, and an eschar at the site from which a tick had been removed. She died four days after disease onset. This is the second published report of an eschar in a patient confirmed by PCR to be infected with R. rickettsii. One month later, the children presented within days of one another with fever and rash and died three and four days after disease onset. The diagnosis was confirmed by immunohistochemistry, PCR and sequencing of the genes of R. rickettsii in tissues obtained at autopsy.