The total number of Legionnaires’ cases in Maine, Massachusetts, and Connecticut has nearly doubled from last year, reports Reuters. Many states in New England had dramatic increases as well, but surprisingly states in other parts of the country did not. For example, California confirmed only slightly more cases than last year.

New York and Pennsylvania also saw large jumps in Legionnaires’ cases.

Epidemiologists have not yet given a reason for the increase, but they are considering various explanations, including increased awareness of Legionnaires’ causing more testing, climate changes and a larger number of seniors who are more vulnerable than younger people.

Source: Reuters WEBWIRE