Table 4. Summary of genotyping and SNP results for travel-associated S. Typhi isolates of unknown origin.
| Isolate | Country of closest SNP match | Distance (#SNPs) | Subclade | Subclade distribution |
|---|---|---|---|---|
| H06434426 | Mexico | 146 | 2.0.2 | North America (50%)North Africa (50%) |
| H06156550 | Pakistan | 92 | 3.0.1 | South Asia (50%)North Africa (50%) |
| H05272442 | Ghana | 17 | 3.1.1 | *West Africa (68%) |
| H09176223 | Bangladesh | 11 | 3.3.0 | *South Asia (83%) |
| H10182335 | India | 18 | 3.3.1 | East Africa (44%)South Asia (19%) |
| H10046338 | Bangladesh† | 13 | 4.3.1 | Southeast Asia (50%)South Asia (26%) |
| H05406403 | Bangladesh† | 4 | ||
| H06136379 | Bangladesh† | 19 | ||
| H06136380 | Bangladesh† | 17 | ||
| H05118260 | Bangladesh/India† | 19 | ||
| H10382491 | India† | 9 | ||
| H10394694 | India† | 9 | ||
| H06016481 | India† | 9 | ||
| H05196407 | India† | 14 | ||
| H05196408 | India† | 12 | ||
| H05212226 | India† | 17 | ||
| H11372598 | Pakistan† | 10 | ||
| H09266336 | Pakistan† | 9 |
SNP, single-nucleotide polymorphism; S. Typhi, Salmonella enterica serovar Typhi.
For each London isolate, the closest isolate in the global collection was determined (closest=smallest SNP distance, that is, smallest number of core genome SNPs); the country and SNP distance are recorded.
*Highlights the most frequent region for this subclade among the global collection, where this matches the region of the closest isolate in the global collection.
†Location of closest travel-associated isolates from London (unresolvable beyond ‘South Asia' based on the global collection alone).