The three beaches in the Chlef area are now closed, and so is a seawater desalination plant in the area.
According to a spokesman for local authorities, 149 bathers were hospitalized after reporting nausea, fever and red eyes after cooling off in the water on Sunday.
Around 50 have since been discharged, and the authorities are now investigating what may have polluted the water. According to local media, the suspicion is directed at a Tanzania-registered ship with cattle in the cargo, which recently visited the port of Tenes.
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