scholarly journals Salmonella enterica subsp. diarizonae Serotype 61:k:1:5:(7) a Host Adapted to Sheep

2021 ◽  
Author(s):  
Inés Rubira ◽  
Luis Pedro Figueras ◽  
José Calasanz Jiménez ◽  
Marta Ruiz de Arcaute ◽  
Héctor Ruiz ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Salmonella Enterica ◽  
Alimentary Tract ◽  
Intestinal Content ◽  
Zoonotic Potential ◽  
Adult Sheep ◽  
Faecal Samples ◽  
Healthy Sheep ◽  
Testicular Lesions ◽  
Health Disorders

Salmonella genus is widely distributed in nature and causes a spectrum of diseases in man and animals. Salmonella enterica subsp. diarizonae serotype 61: k: 1,5, (7) (SED) is a host adapted to sheep and its presence as saprophytic bacteria in sheep has been described in different countries. Several studies performed in abattoirs reported the presence of SED in healthy sheep in the intestinal content and also in the respiratory tract. In addition, this microorganism has also been isolated from nostril and faecal samples in healthy live animals. For this reason, this microorganism is considered well adapted to sheep, behaving normally these animals as asymptomatic carriers. However, SED has also been reported causing health disorders such as chronic proliferative rhinitis in adult sheep, abortions, testicular lesions in rams or alimentary tract disorders in young animals. The zoonotic potential of this microorganism is also discussed.

scholarly journals Identification and characterization of novel porcine astroviruses (PAstVs) with high prevalence and frequent co-infection of individual pigs with multiple PAstV types

2013 ◽  
Vol 94 (3) ◽  
pp. 570-582 ◽  
Author(s):  
Chao-Ting Xiao ◽  
Luis G. Giménez-Lirola ◽  
Priscilla F. Gerber ◽  
Yong-Hou Jiang ◽  
Patrick G. Halbur ◽  
...  
Keyword(s):  
Zoonotic Potential ◽  
The Novel ◽  
Extraintestinal Manifestations ◽  
Faecal Samples ◽  
High Prevalence ◽  
The Usa ◽  
History Of ◽  
Identification And Characterization ◽  
Sequence Identities

Many astrovirus (AstV) species are associated with enteric disease, although extraintestinal manifestations in mammalian and avian hosts have also been described. In this study, the prevalence rates of porcine AstV types 1–5 (PAstV1–PAstV5) were investigated using faecal samples from 509 pigs of which 488 (95.9 %) came from farms with a history of diarrhoea. All of the five known PAstV types were found to circulate in pigs in the USA, and co-infection of a single pig with two or more PAstV types was frequently observed. A high overall prevalence of 64.0 % (326/509) of PAstV RNA-positive samples was detected, with 97.2 % (317/326) of the PAstV RNA-positive pigs infected with PAstV4. Further genomic sequencing and characterization of the selected isolates revealed low sequence identities (49.2–89.0 %) with known PAstV strains, indicating novel types or genotypes of PAstV2, PAstV4 and PAstV5. Some new features of the genomes of the PAstVs were also discovered. The first complete genome of a PAstV3 isolate was obtained and showed identities of 50.5–55.3 % with mink AstV and the novel human AstVs compared with 38.4–42.7 % with other PAstV types. Phylogenetic analysis revealed that PAstV1, PAstV2 and PAstV3 were more closely related to AstVs from humans and other animals than to each other, indicating past cross-species transmission and the zoonotic potential of these PAstVs.

scholarly journals Genetic characterization of Blastocystis from wild animals in Sichuan Wolong National Natural Reserve, southwestern of China-Zoonotic potential

2021 ◽  
Author(s):  
Shanyu Chen ◽  
Wangyu Meng ◽  
Ziyao Zhou ◽  
Lei Deng ◽  
Xiaogang Shi ◽  
...  
Keyword(s):  
Pcr Amplification ◽  
Human Infection ◽  
Rrna Gene ◽  
Zoonotic Potential ◽  
Wild Animals ◽  
Genetic Characteristics ◽  
Natural Reserve ◽  
Faecal Samples ◽  
Wide Range

Abstract Background Blastocystis, a highly prevalent eukaryotic parasite, has been identified in a wide range of hosts, including humans, domestic and wild animals. Many animals are potential sources of Blastocystis infection for humans, while few information about the prevalence of Blastocystis in wild animals have being documented. Therefore, the present study was designed to investigate the prevalence and subtypes of Blastocystis in wild animals of Sichuan Wolong National Natural Reserve, southwestern of China, so as to assess the zoonotic potential of these animals. Methods A total of 300 faecal samples were collected from 27 wildlife species in three areas of Sichuan Wolong National Natural Reserve in southwestern China. The subtype (ST) genetic characteristics and prevalence of Blastocystis were determined by PCR amplification of the barcode region (a fragment of ∼600 bp) of the SSU rRNA gene, and phylogenetic analysis were further performed to determine the genetic characteristics of Blastocystis subtypes. Results 30 of 300 faecal samples (10.0%) were Blastocystis-positive. The highest prevalence of Blastocystis was found in Yinchanggou (18.3%), which was significantly higher than that in Niutoushan (7.5%), and Genda (5.5%) (P < 0.05). Specifically, the highest prevalence of Blastocystis was found in primates (20.0%, 1/5), followed by rodentia 14.3% (1/7), artiodactyla 13.1% (26/198), carnivora 2.3% (2/87), galliformes 0% (0/3). Sequence analysis showed 5 subtypes (ST1, ST3, ST5, ST13, and ST14), with ST13 and ST14 as the predominant subtype (33.3%, 10/30), followed by ST1 (20.0%, 6/30). Conclusions To the best of our knowledge, this is the first molecular investigation on Blastocystis infection in wild animals in southwestern of China. ST1, ST3, and ST5 were identified in both humans and wild animals, suggesting that these wild animals may be potential reservoirs of Blastocystis for human infection.

scholarly journals Cryptosporidium infections in sheep farms from Italy

2020 ◽  
Vol 119 (12) ◽  
pp. 4211-4218
Author(s):  
G. Dessì ◽  
C. Tamponi ◽  
A. Varcasia ◽  
G. Sanna ◽  
A. P. Pipia ◽  
...  
Keyword(s):  
Public Health ◽  
Gastrointestinal Illness ◽  
Economic Losses ◽  
Zoonotic Potential ◽  
Health Implications ◽  
Adequate Control ◽  
Domestic Ruminants ◽  
Faecal Samples ◽  
Wide Range ◽  
Vertebrate Hosts

AbstractCryptosporidiosis is recognized as being a significant cause of gastrointestinal illness due to its wide range of vertebrate hosts, including humans. Infection with Cryptosporidium spp. is especially common in young domestic ruminants (calves, lambs and goat kids) and has been associated with economic losses worldwide. In contrast to cattle, to date, detailed studies on Cryptosporidium infections in sheep from Europe are still limited; thus, their importance as reservoirs of Cryptosporidium species with implications on animal and public health still needs to be clarified. This study evaluates the prevalence and zoonotic potential of Cryptosporidium spp. in sheep farms in Italy. A total of 915 individual faecal samples divided into three different animal categories were collected from 61 sheep farms. Each sample was examined by microscopy of faecal smears stained by modified Ziehl-Neelsen and by biomolecular techniques. Cryptosporidium oocysts were detected in 10.1% of the animals examined and in 34.4% of the farms. The prevalence of Cryptosporidium spp. was significantly higher (χ2 = 51.854; P < 0.001) in diarrhoeic samples than in pasty or normal faeces. Genotype analyses showed the presence of two Cryptosporidium species: C. parvum and C. ubiquitum. Subtyping analysis of C. parvum isolates revealed the presence of subtypes IIa15G2R1 and IIdA20G1 and of subtype XIIa for C. ubiquitum. These findings have public health implications since both Cryptosporidium species identified are considered zoonotic, and C. parvum is the second-most common Cryptosporidium species infecting humans. Our data reveal that lambs, especially those excreting diarrhoeic faeces, may be important reservoirs of Cryptosporidium. We also highlight the need to establish adequate control and monitoring programmes for the control of this infection in sheep farms primarily through coprological monitoring.

scholarly journals Prevalence and Zoonotic Potential of Avian Chlamydia in Croatia

2020 ◽  
Vol 39 (1) ◽  
pp. 3-7
Author(s):  
Danijela Horvatek Tomić ◽  
Estella Prukner-Radovčić ◽  
Iva Pem Novosel ◽  
Maja Lukač ◽  
Željko Gottstein
Keyword(s):  
New Species ◽  
Lung Inflammation ◽  
Bird Species ◽  
Asymptomatic Infection ◽  
Zoonotic Potential ◽  
Chronic Infections ◽  
Protective Measures ◽  
Faecal Samples ◽  
Poultry Farms ◽  
Avian Chlamydiosis

Background: Zoonotic Chlamydia (C.) psittaci, can be found in different bird species, but also in other animals and humans. Recently, new species have been described, as C. gallinacea and C. avium, changing the perspective of a single causative agent of avian chlamydiosis. Genotypes of C. psittaci differ, according to their pathogenicity, and the ones isolated from parrots, turkeys and ducks are particularly pathogenic to bird breeders or owners, veterinarians, poultry farms and slaughterhouse workers. Infections in humans may pass unapparent or to the onset of systemic lung inflammation. Asymptomatic infection is most commonly found in birds, but acute systemic or chronic infections are also possible. Material and Methods: Presence of C. psittaci in birds in Croatia must be reported by law, and all registered flocks of pigeons, parrots and other birds must be examined once, and pet shops at least twice a year. In the period from 2008 to 2017, a total of 3283 avian samples were examined by real-time PCR and the presence of Chlamydiaceae, C. psittaci and C. gallinacea were detected in faecal samples or swabs. Results and Conclusions: In total, 12% of the samples were found positive for Chlamydiaceae. From the 2015, the presence of C. psittaci has also routinely been determined, whereas 34.01% positive avian samples proved to be C. psittaci. Findings of chlamydia in various avian species indicates the importance of proper implementation of the protective measures, by taking into account the zoonotic potential of chlamydia originating from birds and poultry.

scholarly journals Sinonasal Leiomyoma: Report of 2 Cases

2005 ◽  
Vol 84 (4) ◽  
pp. 224-230 ◽  
Author(s):  
A.K. Agarwal ◽  
Ramanuj Bansal ◽  
Deepti Singhal
Keyword(s):  
Smooth Muscle ◽  
Respiratory Tract ◽  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Alimentary Tract ◽  
Subcutaneous Tissue ◽  
Upper Respiratory Tract ◽  
Therapeutic Modalities ◽  
Smooth Muscle Tumors ◽  
Upper Respiratory

Leiomyomas are benign smooth-muscle tumors that are common in the alimentary tract, uterus, skin, and subcutaneous tissue. They are very uncommon in the upper respiratory tract and rare in the nasal cavity and paranasal sinuses. To the best of our knowledge, only 23 such cases have heretofore been published in the literature. We report 2 new cases of sinonasal leiomyoma that originated at different sites in the nasal cavity. We also discuss the various investigative and therapeutic modalities available.

A preliminary survey of the nematode parasites of some imported old-world monkeys

1973 ◽  
Vol 7 (3) ◽  
pp. 265-269 ◽  
Author(s):  
D. Owen ◽  
S. Casillo
Keyword(s):  
Macaca Mulatta ◽  
Alimentary Tract ◽  
Old World Monkeys ◽  
Preliminary Survey ◽  
Old World ◽  
Nematode Parasites ◽  
Faecal Samples

Faecal samples and blood films from 3 species of Old-World monkeys, Macaca mulatta, Macaca irus and Papio dogeura, were examined for the presence of nematode parasites. 8 separate groups, a total of 200 animals, were examined within 24 hours of their arrival at the premises of a primate importer. 8 species of nematode were found to be common inhabitants of the alimentary tract, and small numbers of microfilaria were detected in all groups.

scholarly journals Salmonella serovar spectrum associated with reptiles in Poland

2014 ◽  
Vol 83 (4) ◽  
pp. 287-294 ◽  
Author(s):  
Tomasz Piasecki ◽  
Klaudia Chrząstek ◽  
Alina Wieliczko
Keyword(s):  
Multiplex Pcr ◽  
Salmonella Enterica ◽  
Rapid Screening ◽  
Pcr Assay ◽  
Multiplex Pcr Assay ◽  
Large Numbers ◽  
Faecal Samples ◽  
Reptilian Species

This study aimed to evaluate the incidence ofSalmonellaisolates from a wide variety of reptiles in Poland. A total of 374 faecal samples from chelonians, lizards and snakes were collected between 2009 and 2012. The nested, two-step PCR and multiplex PCR were performed to access the incidence and to characterizeSalmonellaisolates.Salmonellastrains were found in 122 of 374 samples (32.6%). Among the different reptilian species,Salmonellastrains were found in 58 samples from lizards (38.9%), 31 samples from snakes (28.7%) and 33 samples from chelonians (28.2%). Of the total of 122 strains, 72 belonged to the speciesSalmonella entericasubsp.enterica, 20 to the speciesS.entericasubs.salamaeorS.entericasubs.houtanae. The incidence ofS.entericasubs.diarizonaeandS.entericasubs.indicawas low, constituting less than 3.5% of the examined population. The findings show that reptiles can be considered as a reservoir forSalmonellaand hence could pose a zoonotic hazard. In addition, multiplex PCR assay is a rapid, specific and easy-to-perform method and might be applied for rapid screening of large numbers ofSalmonellasamples.

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