Zoonotic and genetically diverse subtypes of Blastocystis in US pre-weaned dairy heifer calves

被引：85

作者：

Maloney, Jenny G. ^{[1
]}

Lombard, Jason E. ^{[2
]}

Urie, Natalie J. ^{[2
]}

Shivley, Chelsey B. ^{[2
]}

Santin, Monica ^{[3
]}

机构：

[1] USDA, Beltsville, MD 20705 USA

[2] USDA, Ft Collins, CO USA

[3] ARS, USDA, Beltsville, MD 20705 USA

来源：

PARASITOLOGY RESEARCH | 2019年 / 118卷 / 02期

关键词：

Blastocystis; Zoonotic; Subtypes; Cattle; MOLECULAR CHARACTERIZATION; GEOGRAPHIC-DISTRIBUTION; IDENTIFICATION; PREVALENCE; CATTLE; CRYPTOSPORIDIUM; EPIDEMIOLOGY; ANIMALS; HUMANS; PIGS;

D O I：

10.1007/s00436-018-6149-3

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Blastocystis is an emerging zoonotic pathogen with global distribution. However, limited data exist on the prevalence and genetic diversity of Blastocystis in the USA and in food animals. We conducted the first large-scale molecular investigation of Blastocystis in the USA by testing 2539 fecal samples from dairy heifer calves from 13 states. Blastocystis was detected in 73 (2.9%) fecal samples and in 10 of the 13 tested states. Molecular characterization showed a wide diversity of subtypes. Eleven subtypes were identified, seven previously reported (ST-3, ST-4, ST-5, ST-10, ST-14, ST-17, and ST-21) and four potentially novel subtypes (named ST-23 to ST-26). Zoonotic subtypes 3, 4, and 5 were found in 67% (49) of the positive specimens in this population. Our results suggest that cattle could serve as reservoirs of infection for humans and other domestic animals highlighting the potential risk of zoonotic transmission for Blastocystis.

引用

页码：575 / 582

页数：8

共 47 条

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