The Department of Health says it has identified 24 cases of Legionnaires’ disease in the Bronx.

Officials say they spotted the disease in the Highbridge neighborhood in the Bronx. Twenty-four people have been diagnosed with Legionnaires’ since the beginning of May. Two people, both over the age of 50, have died. Four are currently in the hospital.

Health leaders in the city urge those who experience flu-like symptoms, fever, cough or difficulty breathing to seek immediate medical attention. Symptoms resemble other types of pneumonia and can include fever, chills, muscle aches and cough.

Officials say Legionnaires’ disease can be caused by plumbing systems in which conditions are favorable for Legionella growth by warm water such as whirlpool spas, hot tubs and humidifiers. Individuals can get sick by breathing in water vapor containing Legionella bacteria. Those aged 50 and above, who smoke cigarettes and with chronic lung disease or compromised immune systems are at greater risk.

The disease is not transmitted from person to person.