Health officials are investigating after one person died, and at least a dozen others were infected by a recent Legionnaires outbreak at a popular spot in New Hampshire.

Officials say that the victim was elderly.

Legionnaires' disease is a bacterial pneumonia and commonly transmitted through inhaling contaminated water droplets that are dispersed into the air. It cannot be transferred by human contact or by drinking water.

The symptoms of Legionnaires' disease are similar to other types of pneumonia, including coughing, shortness of breath, fever, muscle and headaches.

Health officials say the patients most likely became infected between early June and mid August. They say they expect more cases could be reported in the coming days.

Officials are advising people over the age of 50, current or former smokers, or those with lung disease or weakened immune systems to avoid a half-mile stretch of Ashworth Avenue in Hampton.

As a precaution, investigators have closed hot tubs at the Sands Resort and the Harris Sea Ranch Motel.