Table 1.
Characteristics of the Inpatient and Outpatient Surveillance Cohorts
| No. of Cases | Males, no. (%) | Median Age in Years (SD) | Bamako Residents, no. (%) | No. of Malaria Smears Performed (%) | No. Malaria Positive by Smear (%)a | Case Fatality, no. (%) | |
|---|---|---|---|---|---|---|---|
| Inpatient Surveillance Cohort | |||||||
| iNTS | 671 | 392 (58.4) | 1.8 (3) | 462 (68.9) | 613 (91.4) | 117 (19) | 140 (20.9) |
| Enteritidis | 258 | 145 (56.2) | 1.8 (2.7) | 247 (58.1) | 247 (95.7) | 47 (19) | 66 (25.6) |
| Typhimurium | 213 | 120 (56.3) | 2 (3.3) | 163 (76.5) | 189 (88.7) | 33 (17.5) | 33 (15.5) |
| Dublin | 79 | 53 (67.1) | 2 (2.6) | 56 (70.9) | 76 (96.2) | 17 (22.4) | 12 (15.2) |
| I:4,[5],12:i:- | 36 | 25 (69.4) | 2 (4.5) | 30 (83.3) | 28 (77.8) | 9 (32.1) | 5 (13.9) |
| Other serovar | 85 | 49 (57.7) | 1.1 (2.6) | 63 (74.1) | 73 (85.9) | 11 (15) | 24 (28.2) |
| Enteric fever | 138 | 85 (61.6) | 5 (3.8) | 108 (78.3) | 123 (89.1) | 18 (14.6) | 11 (8.0) |
| Typhi | 129 | 79 (61.2) | 6 (3.8) | 100 (77.5) | 114 (88.4) | 14 (12.2) | 11 (8.5) |
| Paratyphi C | 9 | 6 (66.7) | 3 (1.4) | 8 (88.9) | 9 (100) | 4 (44.4) | 0 (0) |
| Outpatient Surveillance Cohort | |||||||
| iNTSb | 11 | 10 (90.9) | 0.9 (0.7) | 9 (81.8) | 11 (100) | 0 (0) | 0 (0) |
| Enteric Fever | 49 | 30 (61.2) | 1.9 (0.6) | 43 (87.8) | 46 (93.9) | 2 (4.1) | 0 (0) |
| Typhi | 44 | 28 (63.6) | 2 (0.6) | 38 (86.4) | 42 (95.5) | 2 (4.6) | 0 (0) |
| Paratyphi C | 5 | 2 (40) | 1.5 (0.5) | 5 (100) | 4 (80) | 0 (0) | 0 (0) |
Abbreviation: iNTS, invasive nontyphoidal Salmonella.
aPercentages of malaria positives are given as the proportion of positive malaria smears among patients who had a malaria smear.
bEleven iNTS cases in the Outpatient Surveillance Cohort are composed of the following serovars: 6 Enteritidis, 1 Typhimurium, 2 Dublin, 1 Group D, and 1 Virchow.