Table 2. Estimated number of total cases of domestically acquired waterborne illness in 2014 for selected infectious diseases, United States* .
| Disease or syndrome | Estimated confirmed cases | Multipliers |
Estimated total cases (95% CrI) | International travel, % | Waterborne, % (95% CrI) | Domestically acquired waterborne, no. (95% CrI) | |
|---|---|---|---|---|---|---|---|
| Under-reporting | Under-diagnosis | ||||||
| Campylobacteriosis | 54,000 | 1.0 | 28.3 | 1,540,000 (597,000–3,250,000) | 14.4 | 13 (1–31) | 171,000 (13,900–586,000) |
| Cryptosporidiosis | 8,450 | 1.0 | 97.3 | 823,000 (243,000–2,160,000) | 9.9 | 43 (17–73) | 322,000 (61,700–993,000) |
| Giardiasis | 17,900 | 1.30 | 45.9 | 1,070,000 (727,000–1,560,000) | 12.3 | 44 (16–78) | 415,000 (140,000–816,000) |
| Legionnaires’ disease | 5,030 | 1.0 | 2.3 | 11,400 (8,920–13,600) | 1.0 | 97 (67–100) | 11,000 (7,430–13,300) |
| NTM infection | 25,700 | 1.0 | 3.8 | 97,000 (75,700–122,000) | 1.0 | 72 (39–94) | 68,900 (35,800–100,000) |
| Norovirus | NA | 1.0 | NA | 21,800,000 (12,100,000–36,000,000) | 1.1 | 6 (0–25) | 1,330,000 (5,310–5,510,000) |
| Otitis externa† | 1,720,000 | 1.0 | 3.4 | 5,980,000 (3,200,000–8,880,000) | 1.3 | 79 (67–95)† | 4,670,000 (2,350,000–7,290,000) |
| Pseudomonas pneumonia | 15,800 | 1.0 | 2.0 | 31,700 (19,300–46,000) | 1.0 | 51 (14–80) | 15,900 (4,240–29,000) |
| Pseudomonas septicemia | 13,000 | 1.0 | 2.0 | 26,100 (16,700–35,900) | 1.0 | 22 (3–53) | 5,760 (743–14,400) |
| Salmonellosis, nontyphoidal | 46,400 | 1.0 | 29.1 | 1,350,000 (733,000–2,450,000) | 9.7 | 6 (0–22) | 77,000 (5,640–277,000) |
| STEC infection, serotype O157 | 3,530 | 1.0 | 18.2 | 64,200 (13,000–188,000) | 4.0 | 5 (1–13) | 3,360 (336–12,900) |
| STEC infection, serotype non-O157 | 4,550 | 1.0 | 48.1 | 219,000 (80,000–493,000) | 15.3 | 6 (0–17) | 11,400 (0–43,900) |
| Shigellosis |
13,600 |
1.0 |
33.1 |
449,000
(97,800–1,350,000) |
7.8 |
4
(1–21) |
17,300
(1,080–77,500) |
| Vibrio spp. infection | 1,230 | NA | NA | 172,000 (126,000–231,000) | NA | NA | 34,600 (17,600–56,900) |
| V. alginolyticus | 234 | 1.1 | 142.8 | 36,700 (23,600–54,800) | 6.5 | 37 (13–71) | 12,700 (4,100–25,400) |
| V. parahaemolyticus | 593 | 1.1 | 141.6 | 92,400 (55,000–144,000) | 6.7 | 24 (7–38) | 20,800 (6,000–39,000) |
| V. vulnificus | 133 | 1.1 | 1.7 | 249 (178–340) | 1.5 | 77 (40–91) | 188 (93–277) |
| Other Vibrio
|
271 |
1.1 |
142.8 |
42,600
(25,500–66,500) |
14.4 |
2
(0–23) |
879
(3–8,490) |
| Total illness | NA | NA | NA | 33,600,000 (23,500,000–48,000,000) | NA | NA | 7,150,000 (3,880,000–12,000,000) |
*Estimates rounded to 3 significant figures. CrI, credible interval; NA, not applicable; NTM, nontuberculous mycobacteria; STEC, Shiga toxin–producing Escherichia coli. †Combines the waterborne source attribution (25) for Pseudomonas spp. otitis externa (81%) and Staphylococcus aureus (75%) in a ratio of 2:1. More details provided in Appendix 1 (https://wwwnc.cdc.gov/EID/article/27/1/19-0676-App1.pdf).