scholarly journals Detection of Rickettsia felis and Rickettsia typhi in an area of California endemic for murine typhus

2009 ◽  
Vol 15 ◽  
pp. 218-219 ◽  
Author(s):  
S.E. Karpathy ◽  
E.K. Hayes ◽  
A.M. Williams ◽  
R. Hu ◽  
L. Krueger ◽  
...  
2015 ◽  
Vol 57 (2) ◽  
pp. 129-132 ◽  
Author(s):  
Gaspar PENICHE-LARA ◽  
Karla DZUL-ROSADO ◽  
Carlos PÉREZ-OSORIO ◽  
Jorge ZAVALA-CASTRO

Rickettsia typhi is the causal agent of murine typhus; a worldwide zoonotic and vector-borne infectious disease, commonly associated with the presence of domestic and wild rodents. Human cases of murine typhus in the state of Yucatán are frequent. However, there is no evidence of the presence of Rickettsia typhi in mammals or vectors in Yucatán. The presence of Rickettsia in rodents and their ectoparasites was evaluated in a small municipality of Yucatán using the conventional polymerase chain reaction technique and sequencing. The study only identified the presence of Rickettsia typhi in blood samples obtained from Rattus rattus and it reported, for the first time, the presence of R. felis in the flea Polygenis odiosus collected from Ototylomys phyllotis rodent. Additionally, Rickettsia felis was detected in the ectoparasite Ctenocephalides felis fleas parasitizing the wild rodent Peromyscus yucatanicus. This study’s results contributed to a better knowledge of Rickettsia epidemiology in Yucatán.


2015 ◽  
Vol 31 (11) ◽  
pp. 1747-1754 ◽  
Author(s):  
Ferran Segura ◽  
Immaculada Pons ◽  
Júlia Pla ◽  
María-Mercedes Nogueras

1989 ◽  
Vol 91 (6) ◽  
pp. 720-724 ◽  
Author(s):  
David H. Walker ◽  
Francis M. Parks ◽  
Thomas G. Betz ◽  
Jeffery P. Taylor ◽  
Joan W. Muehlberger

Author(s):  
M. Bernabeu-Wittel ◽  
M. D. Toro ◽  
M. M. Nogueras ◽  
M. A. Muniain ◽  
N. Cardeñosa ◽  
...  

2012 ◽  
pp. 175-180 ◽  
Author(s):  
Gaspar Peniche Lara ◽  
Karla R. Dzul Rosado ◽  
Jorge Ernesto Zavala Velásquez ◽  
Jorge Zavala-Castro

Rickettsia typhi is an intracellular bacteria who causes murine typhus. His importance is reflected in the high frequency founding specific antibodies against R. typhi in several worldwide seroepidemiological studies, the seroprevalence ranging between 3-36%. Natural reservoirs of Rickettsia typhi are rats (some species belonging the Rattus Genus) and fleas (Xenopsylla cheopis) are his vector. This infection is associated with overcrowding, pollution and poor hygiene. Typically presents fever, headache, rash on trunk and extremities, in some cases may occur organ-specific complications, affecting liver, kidney, lung or brain. Initially the disease is very similar to other diseases, is very common to confuse the murine typhus with Dengue fever, therefore, ignorance of the disease is a factor related to complications or non-specific treatments for the resolution of this infection. This paper presents the most relevant information to consider about the rickettsiosis caused by Rickettsia typhi.


Author(s):  
Lucas S. Blanton ◽  
J. Stephen Dumler ◽  
David H. Walker

2020 ◽  
Vol 13 (11) ◽  
pp. e239471
Author(s):  
Hemesh Mahesh Patel

Fever is a widely recognised presenting symptom of COVID-19. Consequently, other febrile illnesses may be difficult to distinguish from COVID-19—leading to delays in diagnosis and treatment. One such illness is murine typhus, a fleaborne illness with worldwide distribution caused by Rickettsia typhi. It often presents with fever, headache and myalgia, all of which have been commonly reported with COVID-19. Although the disease is usually mild with a good prognosis, there have been reports of severe illness and death. I present a case of murine typhus in a young male who had 2 weeks of headaches and daily fevers during the COVID-19 pandemic. He was ultimately tested for murine typhus when his occupation as a dog trainer was queried, and he experienced resolution of symptoms after treatment with doxycycline. During this pandemic, clinicians must be vigilant of other febrile illnesses whose symptoms overlap with COVID-19.


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