Cryptosporidium spp. in C olumba livia Gmelin, 1789 (Columbiformes: Columbidae) free-living pigeons from urban areas in
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Cryptosporidium spp. in Columba livia Gmelin, 1789 (Columbiformes: Columbidae) free-living pigeons from urban areas in Pelotas, Rio Grande do Sul, Brazil Carolina Caetano dos Santos1 • Sara Patron da Motta1 • Nata´lia Soares Martins1 • Andrios da Silva Moreira1 • Nata´lia Nachtigall Al-Alam2 • Fabio Raphael Pascoti Bruhn3 • Jeroˆnimo Lopes Ruas4 • Nara Ame´lia da Rosa Farias5
Received: 27 April 2020 / Accepted: 21 July 2020 Ó Indian Society for Parasitology 2020
Abstract Cryptosporidium spp. are parasites with zoonotic potential that cause intestinal diseases, generally intense diarrheal, on their hosts, which tend to be immunocompromised. Large populations of pigeons in urban environments can lead to greater human exposure to Cryptosporidium spp., as this bird is considered a potential reservoir and is able to transmit several pathogens. This study aimed in determining the occurrence of Cryptosporidium spp. oocysts in feces of free-living pigeons (Columba livia) found in urban areas in the city of Pelotas, Rio Grande do Sul, south of Brazil. Fecal samples (n = 50) were collected from young and adult pigeons captured in different locations in the urban area and the parasitological diagnosis was performed through Ritchie’s modified technique and Kinyoun’s technique. Among the 50 samples, 18% (IC95% 9.7–30.8) were positive for Cryptosporidium spp. with a low number of oocysts being detected on fecal smears. Our results confirmed the occurrence of Cryptosporidium spp. oocysts in feces of free-living pigeons & Carolina Caetano dos Santos [email protected] 1
Post Graduation Program in Microbiology and Parasitology, Biology Institute, Federal University of Pelotas (UFPel), Pelotas, Brazil
2
Pelotas, Brazil
3
Department of Preventive Veterinary Medicine, School of Veteriary Medicine, Federal University of Pelotas, Pelotas, Brazil
4
Regional Veterinary Diagnosis Laboratory, School of Veterinary Medicine, Federal University of Pelotas (UFPel), Pelotas, Brazil
5
Department of Microbiology and Parasitology, Biology Institute, Federal University of Pelotas (UFPel), Pelotas, Brazil
from the urban area of the city of Pelotas. This is the first report of Cryptosporidium spp. oocysts in feces of pigeons in south Brazil. This data has epidemiological significance because the oocysts could be from zoonotic species, which consequently shows that humans might be exposed to infection. Keywords Cryptosporidiosis Environmental contamination Oocysts Pigeons
Text Cryptosporidium spp. are opportunistic parasites that cause cryptosporidiosis, a gastrointestinal disease, worldwide. Cryptosporidiosis is considered to be a neglected disease highly significant in public health due to the occurrence of outbreaks (Hlavsa et al. 2018), to its demanding treatment (Rossignol 2010), and to its zoonotic potential (Pumipuntu and Piratae 2018). Cryptosporidiosis’ transmission occurs when a susceptible host comes into contact with any object, liquid, food, water, and others contaminated by human or animal fe
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