Article
Public, Environmental & Occupational Health
Jingjing Sun, Ziyang Qin, Yin Fu, Huikai Qin, Mengqing Sun, Haiju Dong, Liqin Chao, Longxian Zhang, Junqiang Li
Summary: Giardia duodenalis is a major cause of diarrhea in humans, especially young children. Statistical analysis showed that G. duodenalis was prevalent in humans (9.72%), dogs (15.60%), and cats (14.53%). Canine-specific assemblages C and D, and feline-specific assemblage F were dominant genotypes in dogs and cats, respectively. Zoonotic assemblages (A and B) were also found in dogs (23.07%) and cats (41.42%), suggesting the potential transmission of G. duodenalis from dogs and cats to humans. The highest frequency of zoonotic assemblages was found in working dogs and the 1-5 age group. In conclusion, dogs and cats play a significant role in the zoonotic transmission of G. duodenalis due to their close contact with humans and the presence of zoonotic assemblages.
Article
Veterinary Sciences
Sang-Ik Oh, Suk-Han Jung, Han-Kyoung Lee, Changyong Choe, Tai-Young Hur, Kyoung-Min So
Summary: Giardia duodenalis infection was found in 5.6% of Korean native calves, with higher prevalence in calves aged >= 1 month and experiencing watery diarrhea. The majority of positive samples belonged to assemblage E, while a few belonged to zoonotic assemblage A, emphasizing the importance of continuous surveillance of genetic mutations in G. duodenalis.
VETERINARY SCIENCES
(2021)
Article
Immunology
Dongfang Li, Han Deng, Yaxin Zheng, Hongyan Zhang, Sen Wang, Lan He, Junlong Zhao
Summary: This study investigated the infection rates and species/genotypes of Cryptosporidium spp. and G. duodenalis in pigs in Hubei, China. The results showed the presence of both parasites in intensive farms, posing a potential public health risk.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Veterinary Sciences
Zhao-Jun Heng, Jian-Fa Yang, Xin-Yan Xie, Cui-Rong Xu, Jun-Rong Chen, Jun Ma, Jun-Jun He, Hua-Ming Mao
Summary: This study investigated the occurrence and genetic diversity of Giardia duodenalis in Holstein cattle in Yunnan Province, China. The results showed a high infection rate in preweaned calves, with assemblage E being the predominant group. Mixed infection of assemblages A and E was also detected in three samples.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Immunology
Zhaohui Cui, Qilin Wang, Xiyao Huang, Jiayi Bai, Bingyang Zhu, Bingchen Wang, Xiaohang Guo, Meng Qi, Junqiang Li
Summary: The prevalence and genetic diversity of G. duodenalis in captive alpine musk deer were investigated in this study. The overall prevalence was 19.3% with two genetic assemblages identified. Six novel assemblage A multilocus genotypes were discovered through multilocus genotyping analysis.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Immunology
Ho Yin Pekkle Lam, Tina Tu-Wen Chen, Yu-Chuan Tseng, Kai-Chih Chang, Ting-Hua Yang, Shih-yi Peng
Summary: The first epidemiological investigation of G. duodenalis infection in animals in Hualien, Taiwan was conducted, revealing infection rates of 19.87% for cattle and 4.26% for pigs. Assemblage A was detected in pigs, indicating potential zoonotic transmission.
JOURNAL OF MICROBIOLOGY IMMUNOLOGY AND INFECTION
(2021)
Article
Parasitology
Andrea Scorza, Jesse Buch, Patricia Franco, Cassandra McDonald, Ramaswamy Chandrashekar, Michael R. Lappin
Summary: Most dogs harbor the host-adapted assemblages C and D, while approximately 30% harbor the zoonotic assemblages. The presence of diarrhea in dogs with Giardia duodenalis infection was not associated with specific assemblages or other parasitic co-infections in this study.
VETERINARY PARASITOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Fu-Rong Zhao, Ning Zhang, Wen-Yuan Miao, Ran Wu, Lin-Lin Cui, Cui-Qin Huang, Dong-Hui Zhou
Summary: This study investigated the prevalence and genotypes of G. duodenalis in pigs in Fujian Province, China. The findings revealed that the pigs in Fujian Province mainly carried the E genotype of G. duodenalis, and highlighted the potential zoonotic risk of G. duodenalis infection from pigs to humans in this area.
Article
Veterinary Sciences
Penglin Wang, Ling Zheng, Linke Liu, Fuchang Yu, Yichen Jian, Rongjun Wang, Sumei Zhang, Longxian Zhang, Changshen Ning, Fuchun Jian
Summary: The study revealed that sheep and goats could be potential reservoir hosts for three gastrointestinal pathogens. The research provided a platform for further detailed genotyping or subtyping of intestinal pathogens to enhance understanding of their risks and modes of transmission.
BMC VETERINARY RESEARCH
(2022)
Article
Parasitology
Fanfan Shu, Shujiao Song, Yanting Wei, Falei Li, Yaqiong Guo, Yaoyu Feng, Lihua Xiao, Na Li
Summary: Zoonotic genotypes of Giardia duodenalis and Enterocytozoon bieneusi are commonly found in wild nonhuman primates in southwestern China.
PARASITES & VECTORS
(2022)
Article
Agriculture, Dairy & Animal Science
Ketsarin Kamyingkird, Pornkamol Phoosangwalthong, Nutsuda Klinkaew, Alisara Leelanupat, Chanya Kengradomkij, Wissanuwat Chimnoi, Teerapat Rungnirundorn, Burin Nimsuphan, Tawin Inpankaew
Summary: This study finds that 13% of pet prairie dogs in Bangkok, Thailand carry the Giardia parasite, which can be transmitted between humans and animals. This highlights the potential risk of infection for both pet owners and their exotic pets. It is recommended for pet owners to improve sanitation, provide clean food and water, and regularly visit veterinary services for screening and treatment.
Article
Agriculture, Dairy & Animal Science
Alba Marti-Marco, Samantha Moratal, Irene Torres-Blas, Jesus Cardells, Victor Lizana, Maria Auxiliadora Dea-Ayuela
Summary: This study aimed to evaluate the distribution of Cryptosporidium spp. and Giardia duodenalis in fecal samples from hunted wild boars in eastern Spain. Both parasites were found, indicating a high prevalence, particularly of Cryptosporidium species that affect humans. This suggests a risk of transmission to humans due to close contact with wild boars, especially as their population is increasing and expanding into urban areas.
Article
Microbiology
Felix Weinreich, Andreas Hahn, Kirsten Alexandra Eberhardt, Simone Kann, Torsten Feldt, Fred Stephen Sarfo, Veronica Di Cristanziano, Hagen Frickmann, Ulrike Loderstaedt
Summary: This study compared and evaluated the application of real-time PCR in the diagnosis of Giardia duodenalis. Results showed that the 18S rRNA gene-specific screening PCR and the BG gene-specific assemblage identification PCR had the best accuracy. Adding highly specific confirmation tests can further improve diagnostic specificity.
Article
Agriculture, Dairy & Animal Science
Pamela Carolina Koster, Begona Bailo, Alejandro Dashti, Carolina Hernandez-Castro, Rafael Calero-Bernal, Francisco Ponce-Gordo, David Gonzalez-Barrio, David Carmena
Summary: In remote or resource-limited areas where the cold chain cannot be maintained, it is challenging to store and preserve biological samples like faecal specimens. This study evaluated the suitability of three commercially available filter cards for long-term storage of faecal samples containing common diarrhoea-causing enteric protozoan parasites, showing that these cards can be compatible with molecular methods for up to six months at room temperature.
Article
Microbiology
Pamela Carolina Koster, Antonio F. Malheiros, Jeffrey J. Shaw, Sooria Balasegaram, Alexander Prendergast, Heloise Lucaccioni, Luciana Melhoranca Moreira, Larissa M. S. Lemos, Alejandro Dashti, Begofia Bailo, Arlei Marcili, Herbert Sousa Soares, Solange Maria Gennari, Rafael Calero-Bernal, David Gonzalez-Barrio, David Carmena
Summary: Little information is available on the occurrence and genetic variability of the diarrhoea-causing enteric protozoan parasite Giardia duodenalis in indigenous communities in Brazil. This cross-sectional epidemiological survey found that G. duodenalis infection rates were positively linked to younger age and tribe in Tapirape people in the Brazilian Amazon. Children were the main group infected, showing high genetic diversity.
