Zaragoza (EFE).- A protozoan of the genus Cryptosporidium is the causative agent of the gastroenteritis outbreak that has affected about 200 people in Tarazona (a municipality in the province of Zaragoza with about 10,000 inhabitants) since the beginning of the week, according to the results of laboratory cultures carried out with feces from sick people.
The oocysts (cysts that form the zygote of the parasite) of this protozoan are found in the human or livestock intestine and can contaminate water, causing community outbreaks such as the one that occurred in the town of Turiason, reported the Health Department of the Aragonese Executive. .
On the morning of this Thursday, the results of the analysis of drinking water samples from Tarazona were obtained and all the measured parameters gave correct values, so as a provisional measure the health services decided on an intensive disinfection of the supply (hyperchlorination) to waiting for the results of stool cultures.
Hours later, the results of the analysis of patient feces have been confirmed, where the presence of this protozoan has been identified.
Water restriction will continue
Laboratory diagnosis of this protozoan can only be detected in fecal cultures, since it is not detectable in drinking water.
Although initially the possibility of hyperchlorination of water had been raised as a measure, this finding in fecal cultures forces us to continue restricting water consumption and adopt specific and more relevant measures.
It has been established that the origin of the outbreak is water for human consumption, due to the sudden beginning of the outbreak, the number of people affected and because it is the only common consumption that those affected have, adds the Ministry.
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