Table 3 Distribution of confirmed cVDPV1 cases by date of shipment and receiving result, Saadah governorate, Yemen 2020
From: Circulating vaccine derived polio virus type 1 outbreak, Saadah governorate, Yemen, 2020
Detected cases and contacts | Sample Shipment | Time delay in days from SC to SSH | lab Result | Time delay in days from SC to RLR | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
|  | No. of cases | Date | Month | Dif. days | Average days (Min–Max) | VP1 nucleotide changes vs # Sabin 1 | Date | Month | Average days (Min–Max) | |
Year 2020 | Case 1 | 1 | 24–03-20 | Mar | 0 | 47 | 20 | 27–04-20 | April | 81 |
Cases 2–16 | 15 | 24–06-20 | June | 92 | 72 (16–110) | 21 (17–24) | 23–07-20 | July | 112 (71–196) | |
cases 17–27 | 11 | 10–10-20 | Oct | 108 | 88(49–111) | 23 (17–27) | 24–12-20 | Dec | 159 (71–186) | |
Case 28 | 1 | 27–12-20 | Dec | 78 | 79 | 20 | 21–01-21 | Jan | 86 (82–90) | |
Cases 29–30 | 2 | 09–02-21 | Feb | 44 | 52 (48–56 | 28 (26–30) | 15–03-21 | Mar | 90 | |
Overall |  |  |  | 76 (16–111) | 22 (17–30) |  | 126( 71–196) | |||
2019 | Case 0 | 1 | 30–09-19 | Sep | 0 | 85 | Neg | 16–03-20 | Mar | 253 |
Contacts case 0 | 2 | 30–01-20 | Jan | 122 | 204 | 13 | 12–07-20 | July | 368 | |