Table 1.
Distribution of iNTS serovars and genotypes circulating in the sampled countries in sub-Saharan Africa
| Country (number of iNTS*) (a) |
Serovars | Number of iNTS per serovar (b) |
% of total number of iNTS per country (b)/(a) |
Genotype (sequence type) |
Number of iNTS per genotype (c) |
% of total number of iNTS per country (c)/(a) |
| Burkina Faso (12) | Typhimurium | 7 | 58 | 313 | 6 | 50 |
| 19 | 1 | 8 | ||||
| Enteritidis | 4 | 33 | 11 | 4 | 33 | |
| Dublin | 1 | 8 | 10 | 1 | 8 | |
| Ghana (133) | Typhimurium | 92 | 69 | 313 | 90 | 68 |
| 19 | 2 | 2 | ||||
| Enteritidis | 20 | 15 | 11 | 18 | 14 | |
| 183 | 1 | 1 | ||||
| 2107 | 1 | 1 | ||||
| Dublin | 17 | 13 | 10 | 17 | 13 | |
| Muenster | 1 | 1 | 321 | 1 | 1 | |
| Poona | 1 | 1 | 308 | 1 | 1 | |
| Stanleyville | 1 | 1 | 339 | 1 | 1 | |
| Virchow | 1 | 1 | 359 | 1 | 1 | |
| Guinea-Bissau (9) | Typhimurium | 5 | 56 | 313 | 2 | 22 |
| 19 | 3 | 33 | ||||
| Enteritidis | 1 | 11 | 11 | *1 | 11 | |
| Choleraesuis | 3 | 33 | 145 | 3 | 33 | |
| Kenya (1) | Typhimurium | 1 | 100 | 313 | 1 | 100 |
| Madagascar (4) | Typhimurium | 1 | 25 | 19 | *1 | 25 |
| Enteritidis | 3 | 75 | 11 | ‡3 | 75 | |
| Senegal (2) | Typhimurium | 1 | 50 | 19 | *1 | 50 |
| Enteritidis | 1 | 50 | 11 | *1 | 50 | |
| South Africa (1) | Enteritidis | 1 | 100 | 11 | *1 | 100 |
| Tanzania (4) | Typhimurium | 3 | 75 | 19 | 3 | 75 |
| Unknown | 1 | 25 | 2533 | 1 | 25 |
| Total 8 countries† (166 iNTS isolates) (d) | Serovars | Number of iNTS per serovar (e) | % of total number of iNTS in all 8 countries (e)/(d) | Genotype (sequence type) | Number of iNTS per genotype (f) | % of total number of iNTS in all 8 countries (f)/(d) |
| Typhimurium | 110 | 66 | ST313 | 99 | 60 | |
| ST19 | 11 | 7 | ||||
| Enteritidis | 30 | 18 | ST11 | 28 | 17 | |
| Other STs‡ | 2 | 1 | ||||
| Dublin | 18 | 11 | ST10 | 18 | 11 | |
| Others | 8 | 5 | Other STs§ | 8 | 5 |
*iNTS: invasive non-typhoidal Salmonella.
†Total 8 countries: Burkina Faso, Ghana, Guinea-Bissau, Kenya, Madagascar, Senegal, South Africa and Tanzania presented in this table. No iNTS isolates were yielded in Sudan and Ethiopia.
‡Other sequence types of S. Enteritidis detected: 1 ST183 (isolate yielded from Ghana; age/sex unknown due to missing data) and 1 ST2107 (from Ghana; a 22-year-old woman); both non-MDR and no antimicrobial resistant genes detected.
§Sequence types of the other NTS serovars: 1 Muenster ST321 (yielded from Ghana; age/sex/year unknown due to missing data), 1 Poona ST308 (yielded from Ghana in 2008; age/sex unknown due to missing data), 1 Stanleyville ST339 (yielded from Ghana; age/sex/year unknown due to missing data), 1 Virchow ST359 (from Ghana; age/sex/year unknown due to missing data), 3 Choleraesui ST145 (two isolates yielded from 1-year-old female infants in 2010 and 2011 and 1 from a 3-year-old female infant in 2012; all from Guinea-Bissau), 1 unknown ST2533 from Tanzania.