First report of Blastocystis infections in cattle in China

Zhu, Weining; Tao, Wei; Gong, Baoan; Yang, Hang; Li, Yijing; Song, Mingxin; Lu, Yixin; Li, Wei

doi:10.1016/j.vetpar.2017.09.001

Cited by 70 publications

(47 citation statements)

References 45 publications

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“…in livestock cattle could thus generate a risk of zoonotic transmission, especially in dairy farmers. Moreover, the same molecular studies and a few others identified ST10 and ST14 as the predominant STs in cattle, likely reflecting bovids as natural hosts for both STs (Cian et al, 2017;Zhu et al, 2017;Masuda et al, 2018).…”

Section: Introductionsupporting

confidence: 54%

“…As shown in Table 2 reporting all the isolates subtyped from domestic cattle in various geographical areas, ST10 and ST14 also globally represented the most widely distributed STs (64.5% of total isolates). This was clearly the case, for instance, in Denmark (Stensvold et al, 2009), Japan (Masuda et al, 2018), Korea (Lee et al, 2018), China (Zhu et al, 2017) and Libya (Alfellani et al, 2013a).…”

Section: Resultsmentioning

confidence: 87%

“…A total of 254 single dairy cattle samples collected from 37 villages and 55 farms located in two governorates of North Lebanon were screened in this study (Table 1) (Masuda et al, 2018), Thailand (50.0%) (Udonsom et al, 2018), Colombia (80.0%) (Ramirez et al, 2014) and Libya (41.7%) (Alfellani et al, 2013a) but was significantly higher than that reported in Korea (6.7%) (Lee et al, 2018), China (9.5% and 10.3%) (Zhu et al, 2017;Wang et al, 2018, respectively), Iran (9.6%) (Badparva et al, 2015), the United Kingdom (22.6%) (Alfellani et al, 2013a) and the United States (19.1% and 2.9%) (Fayer et al, 2012;Maloney et al, 2019, respectively).…”

Section: Resultsmentioning

confidence: 87%

“…in other animal groups, such as bovids and particularly livestock cattle. In the main recent molecular epidemiological surveys including a large number of specimens (Zhu et al, 2017;Lee et al, 2018;Masuda et al, 2018;Wang et al, 2018;Maloney et al, 2019), the prevalence of the parasite in domestic dairy/beef cattle varied between 2.9% and 54.1%, depending on the country. The potential significant occurrence of Blastocystis sp.…”

Section: Introductionmentioning

confidence: 99%

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First report on the prevalence and subtype distribution of Blastocystis sp. in dairy cattle in Lebanon and assessment of zoonotic transmission

et al. 2019

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Blastocystis sp. is frequently identified in a wide range of animal hosts, including bovids. Because of its burden and zoonotic potential, this parasite has been sought in domestic cattle from various countries, since this livestock may also represent a possible reservoir of human infection. However, epidemiological data regarding the prevalence and ST distribution of Blastocystis sp. in this animal group is lacking in Lebanon. Therefore, faecal samples were collected from a total of 254 dairy cattle raised on 55 farms located in the North Lebanon region and screened for the presence of the parasite by quantitative realtime PCR. The overall prevalence of Blastocystis sp. was shown to reach 63.4% in cattle livestock. Sequence analysis of positive samples indicated the presence of seven STs, with predominance of ST10 (44.0%) and ST14 (36.8%) and lower proportions of ST2 (8.0%), ST1 (7.2%), ST5 (2.4%), ST3 and ST7 (0.8% each). This survey was the first conducted worldwide reporting ST2 and ST7 in domestic cattle and confirmed that ST10 and ST14 represent cattle-adapted STs in view of their high prevalence. Faecal samples from in-contact dairy farmers and patients hospitalised in the same Lebanese governorate who reported no contact with cattle livestock were also analysed for the presence of Blastocystis sp. The same three STs were identified in both human cohorts, with predominance of ST3, followed either by ST1 or ST2 depending of the group. No other STs, including ST10 or ST14, have been reported. Moreover, even though ST1, ST2 and ST3 were found to be common to dairy cattle and farmers cohorts, only one ST3 isolate showed 100% sequence identity between both hosts. Consequently, the presence and low prevalence of ST1, ST2, ST3, ST5 and ST7 identified herein in domestic cattle, most of which exhibit low host specificity, could be derived from occasional direct exposure to faecal material from human and non-human hosts or by ingestion of contaminated drinking water or food in the enclosure of the farms. 3 Together with the absence of ST10 and ST14 in the human population, these data suggest that cattle play a negligible role as zoonotic reservoirs of Blastocystis sp.

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Section: Introductionsupporting

confidence: 54%

Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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First report on the prevalence and subtype distribution of Blastocystis sp. in dairy cattle in Lebanon and assessment of zoonotic transmission

et al. 2019

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“…ST10 was the main subtype on infection Blastocystis sp. in China [64][65][66][67], followed by ST5 [61,68]. Dogs in the Italian rescue center were infected with ST3 [114].…”

Section: Discussionmentioning

confidence: 99%

Literature Analysis of Blastocystis sp. from 1990 to 2019 in China

Ning

Tian³

2020

Preprint

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Abstract Background: Blastocystis sp. is ubiquitous presence in animals and humans worldwide and a broad diversity genetically. The aim of this study was to find out the main research progress and research status of Blastocystis sp. in China in the past thirty years.Methods: On the Chinese mainstream database China National Knowledge Infrastructure (CNKI), Wanfang database and PubMed database, the research literatures of Chinese Blastocystis sp. were searched and analyzed.Results: 285 articles related to Blastocystis sp. were retrieved, including 244 published in Chinese and 41 English on pathogen morphology, epidemiological investigation, laboratory detection and diagnosis, clinical case reports, drug treatment, animal model establishment as well as pathogenicity studies. There were the most epidemiological investigations and researches on pathogenic morphology decreasing recently Surveys of Blastocystis sp. of human has been carried out among a total of 18 provinces, with infection rates ranging from 0.007% to 48.6%. Infants and young children, school students, hospitalized diarrhea patients, human immunodeficiency virus (HIV) patients, tuberculosis patients, and cancer patients as respondents had been included. ST1-ST7 and ST12 were the main subtypes in Chinese population. Moreover, surveys of Blastocystis sp. of animal were also conducted in 12 provinces, with infection rates ranging from 2.54% to 79.41%. A variety of animals were investigated including pigs, cattle, sheep, yak, giant panda, and Crested Ibis et al., with the main subtypes of ST1-ST8, ST10, ST12-ST14. In vitro culture and Polymerase chain reaction (PCR) were commonly used to detect Blastocystis sp. in research and less in clinical application. Traditional Chinese medicine and western medicine for clinical drug treatment appeared curative effects. However, there were few reports on the application of traditional Chinese medicine in clinical treatment. The pathogenicity of Blastocystis sp. remains controversial and needs further exploration.Conclusion: various researches on Blastocystis sp. had been carried out in China, especially in epidemiology. However, there is no report on the relationship between human Blastocystis sp. and animal infection. Furthermore, the relationship between infant diarrhea and its impact on the intestinal microecology have not received much attention from clinicians. The research on Blastocystis sp. still needs to be strengthened to provide effective data for the prevention and control and improve the quality of life of the population.