Results 61 to 70 of about 4,439 (176)
Tropical Medicine &International Health, EarlyView.ABSTRACT Background Acute febrile illnesses in sub‐Saharan Africa are often attributed to malaria, yet many patients test negative for malaria parasites. The aetiology of nonmalarial fevers remains understudied. Here, we examine likely causes of febrile illnesses and their association with poor clinical outcomes in Angola.
Helga E. M. Gonçalves +3 more
wiley +1 more source
Rickettsia typhi as Cause of Fatal Encephalitic Typhus in Hospitalized Patients, Hamburg, Germany, 1940-1944. [PDF]
Emerg Infect Dis, 2018 We evaluated formalin-fixed paraffin-embedded tissue specimens from 7 patients who died with encephalitic typhus in Hamburg, Germany, during World War II.
Rauch J, Muntau B, Eggert P, Tappe D.
europepmc +2 more sources
Direct evidence of Rickettsia typhi infection in Rhipicephalus sanguineus ticks and their canine hosts. [PDF]
Open Vet J, 2017 Murine typhus is a rickettsiosis caused by Rickettsia typhi, whose transmission is carried out by rat fleas in urban settlements as classically known, but it also has been related to cat fleas in a sub-urban alternative cycle that has been suggested by ...
Dzul-Rosado K +4 more
europepmc +2 more sources
Improved Detection and Sequencing of Rickettsia spp. DNA in South African Wildlife
Veterinary Medicine and Science, Volume 12, Issue 4, July 2026.Nested gltA PCR detected Rickettsia spp. DNA in 44% of South African wildlife samples previously negative by RLB, revealing spotted fever, typhus and transitional group lineages, novel host records, co‐infection and multi‐organ dissemination in impala, highlighting complex wildlife involvement and zoonotic risk within a One Health framework.
Carlo Andrea Cossu +5 more
wiley +1 more source
Public Health Challenges, Volume 5, Issue 2, June 2026.ABSTRACT Bacteria of the order Rickettsiales comprise a diverse group of obligate intracellular microorganisms that are globally distributed and highly prevalent in tropical and subtropical regions. In South America, these bacteria have been associated with arthropod vectors, such as ticks, fleas, mites, lice, and certain dipterans, as well as with a ...
Cristian J. Zamorano‐Gómez +3 more
wiley +1 more source
Mitochondrial Dysfunction in Ehrlichia canis Infection
Transboundary and Emerging Diseases, Volume 2026, Issue 1, 2026.Transmitted by tick vectors, Ehrlichia canis (E. canis) is a Gram‐negative, obligate intracellular bacterium of zoonotic concern that infects both canine and human hosts. Its pathogenesis centers on the targeting of mononuclear phagocytes, where it establishes an intracellular niche by suppressing phagolysosomal fusion and evading immune detection ...
Xishuai Tong +14 more
wiley +1 more source
Enzymatic activities of cell-free extracts of Rickettsia typhi [PDF]
Infection and Immunity, 1976 Cell-free extracts of Rickettsia typhi were tested for activities of enzymes of the tricarboxylic acid cycle, of glutamate catabolism, and of glycolysis. The organisms were grown in the yolk sacs of chicken embryos, harvested shortly before the time of embryo death, purified by Renografin density gradient centrifugation, and ruptured in a French ...
J C, Coolbaugh, J J, Progar, E, Weiss
openaire +2 more sources
Detection of rickettsia felis, rickettsia typhi, bartonella species and yersinia pestis in fleas (siphonaptera) from Africa [PDF]
, 2014 Little is known about the presence/absence and prevalence of Rickettsia spp, Bartonella spp. and Yersinia pestis in domestic and urban flea populations in tropical and subtropical African countries.
Socolovschi, Cristina +7 more
core +2 more sources
Public Health Challenges, Volume 4, Issue 4, December 2025.GRAPHICAL ABSTRACT Conflict‐driven destruction in Gaza has caused water and sanitation collapse, leading to infestations of rodents and insects, escalating public health risks among displaced populations. ABSTRACT The current study investigates the severe environmental and public health impacts resulting from the ongoing conflict in the Gaza Strip ...
Zuhair Dardona, Samia Boussaa
wiley +1 more source
Medical and Veterinary Entomology, Volume 39, Issue 4, Page 765-775, December 2025.Although flea‐borne typhus is historically associated with poorer living conditions, FBT surveillance reporting is associated with greater socioeconomic advantage at the population level. FBT surveillance may be biased towards socioeconomic advantage in its ascertainment of surveillance data.
Kyle Yomogida +16 more
wiley +1 more source