Cyanobacteria detected in portions of the Charles River

Effects of Tropical Storm Hermine made for a soggy run along the Charles River in Cambridge on Tuesday. morning.
Effects of Tropical Storm Hermine made for a soggy run along the Charles River in Cambridge on Tuesday. –Dina Rudick / The Boston Globe

BOSTON (AP) — Environmental officials in Boston are warning residents of a potentially harmful bacteria outbreak found in parts of the Charles River.

NECN reports the Charles River Watershed Association has announced that recent testing revealed the presence of cyanobacteria in the lower portion of the river.

Elisabeth Cianciola, an aquatic scientist with the Watershed Association, said Thursday that the outbreak was set up by heavy rains immediately followed by an intense period of drought.

The blue-green algae found in the river can irritate the ears, nose and throat. Animals that drink the water or swim in the river can also become sick.

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Cianciola recommended that runners who jog along the Esplanade shower thoroughly afterward because the bacteria can become airborne.

The outbreak is expected to last another two to four weeks.

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