Table 5. Patient households with Shigella-infected household contacts by Shigella species and serotype and visit number at which infection was detected, rural Bangladesh* .
| Household |
Household member |
Species and serotype |
Visit no. |
No. PFGE genotypes within household |
Household genetic relatedness of strains† |
| Household 1 |
Patient | S. flexneri 2a | 1 | 2 |
Closely related |
| Contact 1 | S. flexneri 2a | 3 | |||
| Contact 2 | S. flexneri 2a | 1 | |||
| Contact 2 |
S. flexneri 2a |
2 |
|||
| Household 2 |
Patient | S. flexneri 2a | 1 | 2 |
Unrelated |
| Contact 1 | S. flexneri 2a | 3 | |||
| Contact 1 | S. flexneri 2a | 4 | |||
| Contact 2 |
S. boydii
|
1 |
|||
| Household 3 |
Patient | S. sonnei | 1 | 1 |
Indistinguishable |
| Contact 1 | S. sonnei | 1 | |||
| Contact 1 | S. sonnei | 2 | |||
| Contact 2 | S. sonnei | 4 | |||
| Stored water |
S. sonnei
|
1 |
|||
| Household 4 |
Patient | S. sonnei | 1 | 1 |
Indistinguishable |
| Contact 1 | S. sonnei | 1 | |||
| Contact 1 |
S. sonnei
|
2 |
|||
| Household 5 |
Patient | S. flexneri 2a | 1 | 2 |
Closely related |
| Contact 1 | S. flexneri 2a | 4 | |||
| Contact 2 | S. flexneri 2a | 2 | |||
| Contact 2 | S. flexneri 2a | 3 | |||
| Contact 2 |
S. flexneri 2a |
4 |
|||
| Household 6 |
Patient | S. flexneri 2a | 1 | 2 |
Closely related |
| Contact 1 | S. flexneri 2a | 1 | |||
| Contact 1 | S. flexneri 2a | 2 | |||
| Contact 2 | S. flexneri 2a | 1 | |||
| Contact 2 | S. flexneri 2a | 2 | |||
| Contact 3 |
S. flexneri 2a |
1 |
|||
| Household 7 |
Patient | S. flexneri 1c | 1 | 3 |
Closely related |
| Contact 1 | S. flexneri 1c | 4 | |||
| Contact 2 | S. flexneri 1c | 3 | |||
| Contact 3 | S. flexneri 1c | 2 | |||
| Contact 3 |
S. flexneri 1c |
4 |
|||
| Household 8 |
Patient | S. flexneri 4X | 1 | 2 |
Unrelated |
| Contact 1 |
S. boydii 7 |
2 |
|||
| Household 9 |
Patient | S. sonnei | 1 | 1 |
Indistinguishable |
| Contact 1 | S. sonnei | 1 | |||
| Contact 1 | S. sonnei | 2 | |||
| Contact 2 |
S. sonnei
|
2 |
|||
| Household 10 |
Patient | S. flexneri 1b | 1 | 3 |
Closely related |
| Contact 1 | S. flexneri 1b | 1 | |||
| Contact 1 | S. flexneri 1b | 2 | |||
| Contact 1 | S. flexneri 1b | 3 | |||
| Contact 2 |
S. flexneri 1b |
1 |
|||
| Household 11 |
Patient | S. flexneri 2a | 1 | 1 |
Indistinguishable |
| Contact 1 | S. flexneri 2a | 3 | |||
| Contact 1 | S. flexneri 2a | 4 | |||
| Contact 2 |
S. flexneri 2a |
3 |
|||
| Household 12 |
Patient | S. flexneri 3a | 1 | 1 |
Indistinguishable |
| Contact 1 | S. flexneri 3a | 4 | |||
| Contact 2 | S. flexneri 3a | 4 | |||
| Contact 3 |
S. flexneri 3a |
2 |
|||
| Household 13 |
Patient | S. sonnei | 1 | 2 |
Closely related |
| Contact 1 | S. sonnei | 2 | |||
| Contact 1 |
S. sonnei
|
3 |
|||
| Household 14 |
Patient | S. sonnei | 1 | 1 |
Indistinguishable |
| Contact 1 | S. sonnei | 1 | |||
| Contact 1 |
S. sonnei
|
2 |
|||
| Household 15 |
Patient | S. flexneri 2a | 1 | 2 |
Closely related |
| Contact 1 | S. flexneri 2a | 1 | |||
| Contact 2 |
S. flexneri 2a |
1 |
|||
| Household 16 |
Patient | S. sonnei | 1 | 1 |
Indistinguishable |
| Contact 1 | S. sonnei | 4 | |||
| Contact 2 |
S. sonnei
|
4 |
|||
| *Excluding household contact with different Shigella species. PFGE, pulsed-field gel electrophoresis. †Strain relatedness determined by using criteria in (19). | |||||