Peer-reviewed veterinary case report
Best test for Giardia and Cryptosporidium in dog and cat poop
By Barrera, Juan P et al.·Published in BMC veterinary research·2024·Departamento de Sanidad Animal, Spain·View original on PubMed →
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Original publication title: Enhancing diagnostic accuracy: Direct immunofluorescence assay as the gold standard for detecting Giardia duodenalis and Cryptosporidium spp. in canine and feline fecal samples.
Plain-English summary
A study found that Giardia and Cryptosporidium, two parasites that can cause diarrhea in dogs and cats, were detected in 24.4% and 4.0% of fecal samples, respectively. The research showed that the direct immunofluorescence assay (DFA) was the most accurate method for identifying these infections, especially in dogs, where 30.2% tested positive for Giardia. The study also noted that breeder dogs were more likely to have Giardia, while female cats had a higher chance of being infected with Cryptosporidium. Using DFA can help veterinarians quickly diagnose and treat these infections to prevent further health issues.
People also search for: dog diarrhea Giardia treatment · cat diarrhea Cryptosporidium symptoms · how to test for parasites in pets
Abstract
The enteric protozoan parasites Giardia duodenalis and Cryptosporidium spp. are common cause of diarrhea in pet dogs and cats, affecting primarily young animals. This comparative study evaluates the diagnostic performance of conventional and molecular methods for the detection of G. duodenalis and Cryptosporidium spp. infection in dogs and cats.The compared diagnostic assays included merthiolate-iodine-formalin (MIF) method, lateral flow immunochromatography rapid test (ICT) and real-time PCR; using direct immunofluorescence assay (DFA) as golden standard. The study included the analysis of 328 fecal samples from different dog (n = 225) and cat (n = 103) populations.According to DFA, the overall prevalence of G. duodenalis was 24.4% (80/328, 95% CI: 19.8-29.4), varying from 11.6% (12/103, 95% CI: 6.2-19.5) in cats to 30.2% (68/225, 95% CI: 24.3-36.7) in dogs. The overall prevalence of Cryptosporidium spp. was 4.0% (13/328, 95% CI: 2.1-6.7), varying from 2.9% (3/103, 95% CI: 0.6-8.3) in cats to 4.4% (10/225, 95% CI: 2.1-8.0) in dogs. MIF was only used for the detection of G. duodenalis, which was identified by this method in 22.7% of dogs and 7.8% of cats, respectively. DFA was the most sensitive technique for detecting G. duodenalis in samples from dogs and cats (p-value: < 0.001), followed by real-time PCR. Identification of Cryptosporidium infections was most effectively accomplished by the combination of DFA and PCR technique (p-value: < 0.001). In addition, epidemiological (sex, age, origin) and clinical (fecal consistency) variables were collected to assess their potential associations with an increased likelihood of infection by G. duodenalis and/or Cryptosporidium spp. Breeder dogs were more likely to harbor G. duodenalis infection (p-value: 0.004), whereas female cats were significantly more infected with Cryptosporidium (p-value: 0.003).In conclusion, DFA (alone or in combination with PCR) has been identified as the most accurate and cost-effective method for detecting G. duodenalis and Cryptosporidium spp. in fecal samples from pet dogs and cats. This highlights their importance in both veterinary and clinical settings for enabling prompt treatment and preventing potential transmission to humans.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39358726/