TABLE 1. Confirmed health care–associated Legionnaires’ disease,* by setting and likelihood that exposure to Legionella was from a health care facility water system — 21 U.S. public health jurisdictions,† 2015.
| Type of facility | No. cases (%) |
||
|---|---|---|---|
| Definite§ | Possible¶ | Total | |
| Hospital |
15 (18) |
227 (49) |
242 (44)
|
| Long-term–care |
68 (80) |
61 (13) |
129 (23)
|
| Clinic |
0 (0) |
123 (26) |
123 (22)
|
| Multiple** |
2 (2) |
44 (9) |
46 (8)
|
| Other†† |
0 (0) |
13 (3) |
13 (2)
|
| Total | 85 (100) | 468 (100) | 553 (100) |
* Health care–associated Legionnaires’ disease includes both definite and possible cases in persons who visited, worked, or stayed in a health care setting for any amount of time in the 10 days preceding symptom onset.
† Twenty-one jurisdictions that reported ≥ 90% of confirmed National Notifiable Diseases Surveillance System legionellosis cases to the Supplemental Legionnaires’ Disease Surveillance System in 2015: Alabama, Colorado, Connecticut, Georgia, Hawaii, Iowa, Kentucky, Maine, Michigan, Minnesota, Missouri, New Hampshire, New Mexico, New York, New York City, North Dakota, Ohio, Rhode Island, South Carolina, Texas, and Virginia.
§ Definite case of health care–associated Legionnaires’ disease was defined as laboratory-confirmed legionellosis in a patient with continuous exposure to a hospital or long-term–care facility for the entire 10 days preceding symptom onset.
¶ Possible case of health care–associated Legionnaires’ disease was defined as laboratory-confirmed legionellosis in a patient with any exposure to a health care facility for a portion of the 10 days preceding symptom onset.
** Multiple indicates two or more of the listed setting categories.
†† Other setting includes locations such as outpatient laboratories.