Results 91 to 100 of about 46,726 (278)
Parasitoid-mediated horizontal transmission of Rickettsia between whiteflies
Frontiers in Cellular and Infection Microbiology, 2023 Intracellular bacterial endosymbionts of arthropods are mainly transmitted vertically from mother to offspring, but phylogenetically distant insect hosts often harbor identical endosymbionts, indicating that horizontal transmission from one species to ...
Yuan Liu +16 more
doaj +1 more source
Rickettsia japonica and Novel Rickettsia Species in Ticks, China
Emerging Infectious Diseases, 2019 PCR amplification indicated the minimum infection rate of Rickettsia spp. was 0.66% in Haemaphysalis longicornis ticks collected from Shandong Province, China.
Xiang-rong Qin +13 more
semanticscholar +1 more source
Rickettsia felisand Changing Paradigms about Pathogenic Rickettsiae
Emerging Infectious Diseases, 2014 To the Editor: Mediannikov et al. recently reported several features common to the epidemiology of Rickettsia felis infection and malaria in Africa (1). Similar to the findings of several other recent studies in Africa (2,3), the authors diagnosed R. felis infection in febrile—and to a lesser extent in afebrile—persons by detecting R.
David H. Walker, Marcelo Bahia Labruna
openaire +4 more sources
Medical and Veterinary Entomology, EarlyView.This study provides the first molecular detection of tick‐borne pathogens in Capra aegagrus. Genetic analysis reveals similarities between Babesia aktasi and Anaplasma phagocytophilum strains in bezoar and domestic goats, indicating potential pathogen exchange.
Aykut Zerek +4 more
wiley +1 more source
MORPHOLOGICAL STRUCTURE OF RICKETTSIAE [PDF]
Journal of Experimental Medicine, 1943 The morphological structures of the rickettsiae of epidemic and endemic typhus fever, Rocky Mountain spotted fever, and Q fever are similar to one another and to certain bacteria. The rickettsial organisms in common with the elementary bodies of vaccinia virus and all bacteria would appear to have a limiting membrane which surrounds a substance that ...
Harry Plotz +3 more
openaire +2 more sources
Zoonoses and Public Health, EarlyView.ABSTRACT Introduction Rocky Mountain spotted fever (RMSF), a rapidly progressing febrile disease caused by the bacterium Rickettsia rickettsii, is the deadliest tick‐borne disease in the world. Human infection initially results in non‐specific symptoms and, if untreated, can result in death in up to 35% of cases.
Alec Oliva +10 more
wiley +1 more source
Amblyomma imitator Ticks as Vectors of Rickettsia rickettsii, Mexico
Emerging Infectious Diseases, 2010 Real-time PCR of Amblyomma imitator tick egg masses obtained in Nuevo Leon State, Mexico, identified a Rickettsia species. Sequence analyses of 17-kD common antigen and outer membrane protein A and B gene fragments showed to it to be R. rickettsii, which
Karla A. Oliveira +13 more
doaj +1 more source
PLoS Neglected Tropical Diseases, 2019 Background Rickettsia bacteria are responsible for diseases in humans and animals around the world, however few details are available regarding its ecology and circulation among wild animals and human populations at high transmission risk in Brazil.
L. B. Kmetiuk +13 more
semanticscholar +1 more source
RESPIRATION OF TYPHUS RICKETTSIAE [PDF]
Journal of Experimental Medicine, 1949 Partially purified suspensions of typhus rickettsiae have been shown to exhibit metabolic activity as evidenced by consumption of oxygen and production of carbon dioxide in the presence of glutamate. Similar activity at a much lower rate occurs in the presence of pyruvate.
Marianna R. Bovarnick, John C. Snyder
openaire +3 more sources
Overlooked Brill‐Zinsser Disease Presenting Like Japanese Spotted Fever: A Diagnostic Challenge
The Journal of Dermatology, EarlyView.
Makoto Kondo +2 more
wiley +1 more source