The Centers for Disease Control and Prevention warns the public of the potential health hazards of swimming in untreated recreational waters such as lakes، river، and beaches this swimming season، AS Tech Times said. A newly released report details just how many outbreaks have been associated with such activities in recent years. On Friday، the CDC released a report detailing the untreated recreational water-related outbreaks between the years of 2000 and 2014. Evidently، between those years alone، there were 140 such outbreaks reported by the governments of 35 states and Guam، which resulted in nearly 5،000 illnesses and two deaths. Of the outbreaks with a confirmed etiology، 84 percent were linked to enteric or gastrointestinal pathogens such as E.coli، norovirus، Shigella، and Cryptosporidium، while 11 percent or 345 of the cases were linked to bacteria from birds that are also present in the waters. Meanwhile، the two reported deaths came from a single outbreak linked to Naegleria fowleri، a brain-eating amoeba. In particular، the CDC report reveals that a majority of the outbreaks occurred between June and August، 58 percent of which started in July. Most of the outbreaks were recorded in locations such as lakes، ponds، and reservoirs، but cases were recorded in beaches as well.