Giardia duodenalis

Ortega, Ynés R.; Raad, Rawane

doi:10.1016/b978-0-12-818731-9.00082-3

Cited by 1 publication

(3 citation statements)

References 93 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Giardia duodenalis , also known as Giardia lamblia or Giardia intestinalis , was first described in 1681 1 , 2 and is a group of ubiquitous pathogenic gastrointestinal protozoans 3 . The hosts include humans, companion animals, livestock, and wildlife 4 .…”

Section: Introductionmentioning

confidence: 99%

“…In the latter two records, Giardia was confirmed as the pathogen in 70 (35.2%) 6 and 141 (37%) cases 7 , respectively . It is estimated that 8 × 10 8 global cases of giardiasis occur annually 2 . Giardiasis is a notifiable disease by the Centers for Disease Control and Prevention in the USA 2 .…”

Section: Introductionmentioning

confidence: 99%

“…It is estimated that 8 × 10 8 global cases of giardiasis occur annually 2 . Giardiasis is a notifiable disease by the Centers for Disease Control and Prevention in the USA 2 . Cattle are considered the source of waterborne giardiasis outbreaks in humans 4 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prevalence and molecular characterization of Giardia duodenalis in dairy cattle in Central Inner Mongolia, Northern China

Zhao,

Zhang,

Han

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Giardia duodenalis is a gastrointestinal protozoan ubiquitous in nature. It is a confirmed zoonotic pathogen, and cattle are considered a source of giardiasis outbreaks in humans. This study aimed to evaluate the prevalence and multilocus genotype (MLG) of G. duodenalis in dairy cattle in Central Inner Mongolia. This study was based on the small subunit ribosomal RNA (SSU rRNA), glutamate dehydrogenase (gdh), triosephosphate isomerase (tpi), and beta-giardin (bg) genes of G. duodenalis. DNA extraction, polymerase chain reaction (PCR), and sequence analysis were performed on 505 dairy cattle fecal samples collected in 2021 from six sampling sites and four age groups in Central Inner Mongolia to determine the prevalence and MLG distribution of G. duodenalis. The PCR results of SSU rRNA revealed that the overall prevalence of G. duodenalis was 29.5% (149/505) and that the overall prevalence of the diarrhea and nondiarrhea samples was 31.5% (46/146) and 28.5% (103/359), respectively; the difference was not significant (p > 0.05). SSU rRNA sequence analysis revealed that G. duodenalis assemblage E (91.1%, 133/146) was primarily detected and that assemblage A (8.9%, 13/146) was detected in 13 samples. The G. duodenalis—positive samples were PCR amplified and sequenced for gdh, tpi, and bg, from which 38, 47, and 70 amplified sequences were obtained, respectively. A combination of G. duodenalis assemblages A and E were detected in seven samples. Multilocus genotyping yielded 25 different assemblage E MLGs, which formed six subgroups. To the best of our knowledge, this is the first report regarding G. duodenalis infection in dairy cattle in Inner Mongolia, China. This study revealed that Inner Mongolian cattle pose a risk of giardiasis transmission to humans and that the distribution of local cattle G. duodenalis assemblage E MLGs is diverse. The findings of this study can bridge the knowledge gap in the molecular epidemiological investigation of giardiasis in Central Inner Mongolia.

show abstract