An outbreak of Legionnaires’ disease in Atlanta has been linked to a Sheraton hotel downtown, and officials said dozens of people had likely been infected.

The Georgia Department of Public Health said Monday that in addition to 11 confirmed cases of people who contracted the disease, 55 more cases were “probable.” There have been no reported deaths but some people have been hospitalized, a spokeswoman said.

The Sheraton Atlanta Hotel, which is on Courtland Street, “voluntarily decided to close until the source of the Legionella is located and remediation is complete,” according to state officials.

The hotel closed on July 15 and, pending the results of an investigation and remediation, could reopen sometime in August. The Sheraton brand was acquired in 2016 by Marriott International, which did not immediately respond to a request for comment.