Health Department officials say two tenants of a Morris Heights building have tested positive for Legionnaires' disease.

Tenants at 1600 Sedgwick Ave. received a letter from the department alerting them to the positive results. The two cases were about 12 months apart from each other.

The Health Department held a meeting at the building Monday night regarding its water supply, which is now being tested for legionella, the bacteria that causes the type of pneumonia known as Legionnaires' disease. While the tests are being conducted, residents at the building are advised to take baths instead of showers and to not use hot water when cooking.

The Aspen Management Company, which runs the building, says, "We also just found out this morning and will follow the recommendations of the New York City Department of Health."

The announcement comes after an outbreak last year in the South Bronx led to major changes by the city to help prevent the spread of the disease.

The Health Department tells News 12 that hundreds of cases of Legionnaires' do occur in the city every year, and that tenants are notified when two or more cases are confirmed at a single address in a one-year-period.