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Contribution of hospitals to the occurrence of enteric protists in urban wastewater
Ist Teil von
Parasitology research (1987), 2020-09, Vol.119 (9), p.3033-3040
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2020
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
We assessed the potential contribution of hospitals to contaminations of wastewater by enteric protists, including
Cryptosporidium
spp.,
Giardia duodenalis
, and
Enterocytozoon bieneusi
in raw wastewater. Wastewater samples were collected from storage tanks in two hospitals and one associated wastewater treatment plant in Shanghai, China, from March to November 2009. Enteric pathogens were detected and identified using PCR and DNA sequencing techniques. Among a total of 164 samples analyzed, 31 (18.9%), 45 (27.4%), and 122 (74.4%) were positive for
Cryptosporidium
spp.,
G. duodenalis
, and
E. bieneusi
, respectively. Altogether, three
Cryptosporidium
species, four
G. duodenalis
assemblages, and 12
E. bieneusi
genotypes were detected.
Cryptosporidium hominis
,
G. duodenalis
sub-assemblage AII, and
E. bieneusi
genotype D were the dominant ones in wastewater from both hospitals and the wastewater treatment plant. A similar distribution in genotypes of enteric pathogens was seen between samples from hospitals and the wastewater treatment plant, suggesting that humans are one of the major sources for these pathogens and hospitals are important contributors of enteric parasites in urban wastewater. Data from this study might be useful in the formulation of preventive measures against environmental contamination of waterborne pathogens.