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https://www.readbyqxmd.com/read/28449088/clinical-manifestations-of-scrub-typhus
#1
Senaka Rajapakse, Praveen Weeratunga, Sriharan Sivayoganathan, Sumadhya Deepika Fernando
The mite-borne rickettsial zoonosis scrub typhus is widely prevalent in parts of Southeast and Far East Asia, and northern Australia. The disease is an acute febrile illness, associated with rash and often an eschar, which responds dramatically to treatment with antibiotics. In some cases it results in a serious illness leading to multiple organ involvement and death. The disease manifestations are thought to result from a systemic vasculitis, caused by both direct effects of the organisms as well as an exaggerated immune response, although little is understood about its pathogenesis...
April 25, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28433410/echinococcus-oligarthrus-in-the-subtropical-region-of-argentina-first-integration-of-morphological-and-molecular-analyses-determines-two-distinct-populations
#2
Juan Pablo Arrabal, Hector Gabriel Avila, Maria Romina Rivero, Federico Camicia, Martin Miguel Salas, Sebastián A Costa, Carlos G Nocera, Mara C Rosenzvit, Laura Kamenetzky
Echinococcosis is a parasitic zoonosis that is considered as a neglected disease by the World Health Organization. The species Echinococcus oligarthrus is one of the causative agents of Neotropical echinococcosis, which is a poorly understood disease that requires a complex medical examination, may threaten human life, and is frequently associated with a low socioeconomic status. Morphological and genetic diversity in E. oligarthrus remains unknown. The aim of this work is to identify and characterize E. oligarthrus infections in sylvatic animals from the Upper Paraná Atlantic Forest in the province of Misiones, Argentina, by following an integrative approach that links morphological, genetic and ecological aspects...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28432940/a-sandwich-immunoassay-for-brucellosis-diagnosis-based-on-immune-magnetic-beads-and-quantum-dots
#3
Li Li, Dehui Yin, Kun Xu, Yushen Liu, Dandan Song, Juan Wang, Chao Zhao, Xiuling Song, Juan Li
Brucellosis is a serious zoonosis with a rapid increase in incidence across epidemic regions. Currently, there are numerous methods for diagnosing brucellosis. However, these studies often have a few defects, such as low sensitivity, poor specificity, time consuming, laborious, and even potential biological risk. To overcome these shortcomings, we have developed a rapid, sensitive and accurate diagnosis procedure for brucellosis based on the immune magnetic beads (IMB) probe and quantum dots (QDs) - staphylococcal protein A (SPA) probe...
April 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28421186/cost-description-and-comparative-cost-efficiency-of-post-exposure-prophylaxis-and-canine-mass-vaccination-against-rabies-in-n-djamena-chad
#4
Rolande Mindekem, Monique Sarah Lechenne, Kemdongarti Service Naissengar, Assandi Oussiguéré, Bidjeh Kebkiba, Daugla Doumagoum Moto, Idriss Oumar Alfaroukh, Laurent Tinoanga Ouedraogo, Sahidou Salifou, Jakob Zinsstag
Rabies claims approximately 59,000 human lives annually and is a potential risk to 3.3 billion people in over 100 countries worldwide. Despite being fatal in almost 100% of cases, human rabies can be prevented by vaccinating dogs, the most common vector, and the timely administration of post-exposure prophylaxis (PEP) to exposed victims. For the control and prevention of human rabies in N'Djamena, the capital city of Chad, a free mass vaccination campaign for dogs was organized in 2012 and 2013. The campaigns were monitored by parallel studies on the incidence of canine rabies based on diagnostic testing of suspect animals and the incidence of human bite exposure recorded at selected health facilities...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28416007/disseminated-alveolar-echinococcosis-resembling-metastatic-malignancy-a-case-report
#5
Laura Caire Nail, Ezequiel Rodríguez Reimundes, Christelle Weibel Galluzzo, Dan Lebowitz, Yasmine Lucile Ibrahim, Johannes Alexander Lobrinus, François Chappuis
BACKGROUND: Alveolar echinococcosis is a potentially lethal zoonosis caused by larval forms of the tapeworm Echinococcus multilocularis. Humans are aberrant intermediate hosts who become infected by ingestion of egg-contaminated food or water or via physical contact with domestic or wild animals that carry the parasite in their small intestine. In humans, the disease usually affects the liver and can spread to other organs causing metastatic infiltration. In this report, we describe an advanced presentation of human alveolar echinococcosis mimicking metastatic malignancy...
April 18, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28412048/comparative-proteome-profiling-of-hydatid-fluid-from-algerian-patients-reveals-cyst-location-related-variation-in-echinococcus-granulosus
#6
Razika Zeghir-Bouteldja, Andy Polomé, Sabrina Bousbata, Chafia Touil-Boukoffa
Human cystic echinococcosis, an endemic zoonosis in Algeria, is caused by larvae of the cestode Echinococcus granulosus. Parasitic modulation of the immune response allows E. granulosus to persist in intermediate hosts. Previous in vitro and in vivo immunological studies have shown differences in host immune responses according to the status and location of the hydatid cysts in the body. In this study, a proteomic analysis of human hydatid fluids was performed to identify the proteins in hydatid cyst fluids...
April 13, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28411480/hemorrhagic-fever-with-renal-syndrome-in-albania-focus-on-predictors-of-acute-kidney-injury-in-hfrs
#7
Elvana Rista, Arben Pilaca, Ilir Akshija, Ariol Rama, Endri Harja, Edmond Puca, Silvia Bino, Vilma Cadri, Majlinda Kota, Thereska Nestor, Harxhi Arjan
BACKGROUND: Hemorrhagic fever with renal syndrome (HFRS) is a rodent borne zoonosis, caused by the members of the family Bunyaviridae, genus Hantavirus. The main clinical features of the infection by this virus family are fever, thrombocytopenia and acute kidney injury. OBJECTIVE: The aim of our study was to identify, for the first time, characteristic features of HFRS in the Albanian population. STUDY DESIGN: The study comprised 33 consecutive patients admitted with suspected HFRS from April 2011-April 2016 at one center...
March 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28410507/high-level-of-il-10-expression-in-the-blood-of-animal-models-possibly-relates-to-resistance-against-leptospirosis
#8
Mariko Matsui, Louise Roche, Marie-Estelle Soupé-Gilbert, Milena Hasan, Didier Monchy, Cyrille Goarant
Leptospirosis is a severe zoonosis which immunopathogenesis is poorly understood. We evaluated correlation between acute form of the disease and the ratio of the anti-inflammatory cytokine IL-10 to the pro-inflammatory TNF-α and IL-1β expression during the early phase of infection comparing resistant mice and susceptible hamsters infected with two different species of virulent Leptospira. The IL-10/TNF-α and IL-10/IL-1β expression ratios were higher in mouse compared to hamster independently of the Leptospira strain, suggesting a preponderant role of the host response and notably these cytokines in the clinical expression and survival to leptospirosis...
April 11, 2017: Cytokine
https://www.readbyqxmd.com/read/28407808/nested-pcr-assay-for-detection-of-schistosoma-japonicum-infection-in-domestic-animals
#9
Xin Zhang, Chuan-Chuan He, Jin-Ming Liu, Hao Li, Ke Lu, Zhi-Qiang Fu, Chuan-Gang Zhu, Yi-Ping Liu, Lai-Bao Tong, De-Bao Zhou, Li Zha, Yang Hong, Ya-Mei Jin, Jiao-Jiao Lin
BACKGROUND: Schistosomiasis japonica is a common zoonosis. Domestic animals are the primary source of infection and play an important role in disease transmission. The prevalence and infectivity of this disease in domestic animals in China have significantly decreased and, for this reason, diagnostics with a higher sensitivity have become increasingly necessary. It was reported that polymerase chain reaction (PCR)-based methods could be used to detect schistosome infection in humans and animals and presented a high sensitivity and specificity...
April 13, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28406757/rabies-virus-exposure-of-brazilian-free-ranging-wildlife-from-municipalities-without-clinical-cases-in-humans-or-in-terrestrial-wildlife
#10
João Marcelo Azevedo de Paula Antunes, Larissa de Castro Demoner, Tatiana Morosini de Andrade Cruvinel, Ana Paula Kataoka, Luzia Fátima Alves Martorelli, Gustavo Puglia Machado, Jane Megid
Rabies is a zoonosis that causes thousands of animal and human deaths worldwide. Serological studies provide information concerning rabies virus circulation among animals and humans. We evaluated the circulation of the rabies virus in wildlife in nine municipalities of São Paulo State, Brazil. We took blood samples from 27 terrestrial animals of nine different mammalian species in locations without cases of rabies in human and wild terrestrial mammals. Sera were tested with the use of the rapid fluorescent focus inhibition test (RFFIT) for the detection of rabies virus-neutralizing antibodies (RVNA)...
April 13, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28403184/low-prevalence-of-human-enteropathogenic-yersinia-spp-in-brown-rats-rattus-norvegicus-in-flanders
#11
Lieze Oscar Rouffaer, Kristof Baert, Anne-Marie Van den Abeele, Ivo Cox, Gerty Vanantwerpen, Lieven De Zutter, Diederik Strubbe, Katleen Vranckx, Luc Lens, Freddy Haesebrouck, Michel Delmée, Frank Pasmans, An Martel
Brown rats (Rattus norvegicus) have been identified as potential carriers of Yersinia enterocolitica and Y. pseudotuberculosis, the etiological agents of yersiniosis, the third most reported bacterial zoonosis in Europe. Enteropathogenic Yersinia spp. are most often isolated from rats during yersiniosis cases in animals and humans, and from rats inhabiting farms and slaughterhouses. Information is however lacking regarding the extent to which rats act as carriers of these Yersinia spp.. In 2013, 1088 brown rats across Flanders, Belgium, were tested for the presence of Yersinia species by isolation method...
2017: PloS One
https://www.readbyqxmd.com/read/28382704/hepatitis-e-the-current-state-of-play
#12
REVIEW
M J Ankcorn, R S Tedder
The hepatitis E virus (HEV) is a major cause of acute hepatitis globally. Genotypes 1 and 2 (G1 and G2) are obligate human pathogens transmitted faeco-orally, leading to epidemics in developing countries. In contrast, genotypes 3 and 4 (G3 and G4) have a wider host range, including humans, but are primarily porcine viruses and are transmitted from animals to humans as a food-borne zoonosis when meat from an infected animal is consumed. HEV is increasingly recognised as a problem in developed countries, including countries in Europe...
April 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28382472/omp31-plays-an-important-role-on-outer-membrane-properties-and-intracellular-survival-of-brucella-melitensis-in-murine-macrophages-and-hela-cells
#13
L Verdiguel-Fernández, R Oropeza-Navarro, Francisco J Basurto-Alcántara, A Castañeda-Ramírez, Antonio Verdugo-Rodríguez
Brucellosis is an infectious disease that affects practically all species of mammals, including human, and is a major zoonosis worldwide. Brucella spp. are facultative intracellular pathogens that have the ability to survive and multiply in phagocytic and nonphagocytic cells such as trophoblast and epithelial cells. Among the six recognized species of the genus Brucella, Brucella melitensis is the main etiological agent involved in goat brucellosis and is also the most pathogenic for human. It causes significant losses in livestock production as a result of abortions, metritis, infertility, and birth of weak animals...
April 5, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28379509/a-locus-encoding-variable-defence-systems-against-invading-dna-identified-in-streptococcus-suis
#14
Masatoshi Okura, Takashi Nozawa, Takayasu Watanabe, Kazunori Murase, Ichiro Nakagawa, Daisuke Takamatsu, Makoto Osaki, Tsutomu Sekizaki, Marcelo Gottschalk, Shigeyuki Hamada, Fumito Maruyama
Streptococcus suis, an important zoonotic pathogen, is known to have an open pan-genome and to develop a competent state. In S. suis, limited genetic lineages are suggested to be associated with zoonosis. However, little is known about the evolution of diversified lineages and their respective phenotypic or ecological characteristics. In this study, we performed comparative genome analyses of S. suis, with a focus on the competence genes, mobile genetic elements (MGEs), and genetic elements related to various defence systems against exogenous DNAs (defence elements) that are associated with gene gain/loss/exchange mediated by horizontal DNA movements and their restrictions...
April 4, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28376905/characterization-of-brucella-abortus-mutant-strain-%C3%AE-22915-a-potential-vaccine-candidate
#15
Yanqing Bao, Mingxing Tian, Peng Li, Jiameng Liu, Chan Ding, Shengqing Yu
Brucellosis, caused by Brucella spp., is an important zoonosis worldwide. Vaccination is an effective strategy for protection against Brucella infection in livestock in developing countries and in wildlife in developed countries. However, current vaccine strains including S19 and RB51 are pathogenic to humans and pregnant animals, limiting their use. In this study, we constructed the Brucella abortus (B. abortus) S2308 mutant strain Δ22915, in which the putative lytic transglycosylase gene BAB_RS22915 was deleted...
April 4, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28371421/hepatitis-e-virus-in-wild-rabbits-and-european-brown-hares-in-germany
#16
F Hammerschmidt, K Schwaiger, L Dähnert, A Vina-Rodriguez, D Höper, M Gareis, M H Groschup, M Eiden
Recently, a change of hepatitis E from being a typical travel-associated disease to an autochthonous zoonosis in Germany was observed. An increasing number of autochthonous infections with the hepatitis E Virus (HEV) have been recognized in developed countries. Venison from wild boar is already known to be a potential source of infection, if not prepared properly by the consumer. In Germany, certain wild animals are known to be a reservoir for HEV. However, current information is missing about European brown hares (Lepus europaeus) and wild rabbits (Oryctolagus cuniculus)...
March 28, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28368077/cowpox-virus-infection-in-a-child-after-contact-with-a-domestic-cat-a-case-report
#17
Ryszard Żaba, Magdalena Jałowska, Michał J Kowalczyk, Monika Bowszyc-Dmochowska, Zygmunt Adamski, Andrzej Szkaradkiewicz
Human cowpox represents a seldom diagnosed zoonosis but this diagnosis should be considered more frequently as the number of cases has increased in recent years. We describe a case of cowpox in an 11-year-old boy following regular direct daily contact with a domestic cat. The 11-year-old patient, an otherwise healthy boy, demonstrated skin ulceration located at his chin, with enlargement of regional lymph nodes and fever reaching 39°C. The diagnosis of cowpox was made on the basis of PCR involving DNA isolated from a scab covering the skin lesion...
April 3, 2017: New Microbiologica
https://www.readbyqxmd.com/read/28365226/rocky-mountain-spotted-fever-in-mexico-past-present-and-future
#18
REVIEW
Gerardo Álvarez-Hernández, Jesús Felipe González Roldán, Néstor Saúl Hernández Milan, R Ryan Lash, Casey Barton Behravesh, Christopher D Paddock
Rocky Mountain spotted fever, a tick-borne zoonosis caused by Rickettsia rickettsii, is among the most lethal of all infectious diseases in the Americas. In Mexico, the disease was first described during the early 1940s by scientists who carefully documented specific environmental determinants responsible for devastating outbreaks in several communities in the states of Sinaloa, Sonora, Durango, and Coahuila. These investigators also described the pivotal roles of domesticated dogs and Rhipicephalus sanguineus sensu lato (brown dog ticks) as drivers of epidemic levels of Rocky Mountain spotted fever...
March 29, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28364836/molecular-diagnosis-and-phylogeographic-analysis-of-trypanosoma-evansi-in-dogs-canis-lupus-familiaris-suggest-an-epidemiological-importance-of-this-species-in-colombia
#19
Jeiczon Jaimes-Dueñez, Omar Triana-Chávez, Andrés Valencia-Hernández, Diana Sánchez-Arévalo, Alba Poche-Ceballos, José Ortíz-Álvarez, Ana M Mejía-Jaramillo
Surra disease is a zoonosis caused by Trypanosoma (Trypanozoon) evansi, a salivary trypanosome, originally from Africa, which affects a wide range of mammalian worldwide. Dogs are highly susceptible to T. evansi infection and they often exhibit strong clinical signs than can lead to death, even within weeks in untreated acute cases. The present survey is the first report through clinical, parasitological and molecular approaches, of two fatal cases of T. evansi in Colombian dogs. After analysing two presumptive cases of infection with Trypanosoma spp...
April 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28360908/fasciola-hepatica-immune-regulates-cd11c-cells-by-interacting-with-the-macrophage-gal-galnac-lectin
#20
Ernesto Rodríguez, Paula Carasi, Sofía Frigerio, Valeria da Costa, Sandra van Vliet, Verónica Noya, Natalie Brossard, Yvette van Kooyk, Juan J García-Vallejo, Teresa Freire
Fasciolosis, caused by Fasciola hepatica and Fasciola gigantica, is a trematode zoonosis of interest in public health and livestock production. Like other helminths, F. hepatica modulates the host immune response by inducing potent polarized Th2 and regulatory T cell immune responses and by downregulating the production of Th1 cytokines. In this work, we show that F. hepatica glycans increase Th2 immune responses by immunomodulating TLR-induced maturation and function of dendritic cells (DCs). This process was mediated by the macrophage Gal/GalNAc lectin (MGL) expressed on DCs, which recognizes the Tn antigen (GalNAc-Ser/Thr) on parasite components...
2017: Frontiers in Immunology
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