| occurrence of cryptosporidium, giardia, and cyclospora in influent and effluent water at wastewater treatment plants in arizona. | we investigated the occurrence of cryptosporidium, giardia, and cyclospora at two wastewater treatment plants (wwtps) in arizona over a 12-month period, from august 2011 to july 2012. influent and effluent wastewater samples were collected monthly, and protozoan (oo)cysts were concentrated using an electronegative filter, followed by the detection of protozoa using fluorescent microscopy (cryptosporidium oocysts and giardia cysts) and pcr-based methods (cryptosporidium spp., giardia intestinalis ... | 2014 | 24695096 |