Table 1.
Recombinant features of circulating vaccine-derived polioviruses (cVDPVs) implicated in polio outbreaks. The type of capsid is indicated as well as the presence of non-vaccine sequences (HEV-C) in at least part of the non-structural genomic regions. Niger and Chad cVDPVs are linked to the Nigeria outbreak.
| Country | Number of Cases | Year(s) of Outbreak | cVDPV capsid/non capsid coding region | References |
|---|---|---|---|---|
| Indonesia | 46 | 2005 | OPV type 1 / HEV-C | [96] |
| China | 2 | 2004 | OPV type 1 | [98] |
| Philippines | 3 | 2001 | OPV type 1 / HEV-C | [84] |
| DOR/Haiti | 21 | 2000–01 | OPV type 1 / HEV-C | [83] |
| Egypt | 30 | 1988–1993 | OPV type 2 / HEV-C | [67] |
| Nigeria | 338 | 2005–2011 | OPV type 2 / HEV-C | [85] |
| Chad | 1 | 2010 | OPV type 2 / HEV-C | [95] |
| DR Congo | 37 | 2008–10 | OPV type 2 / HEV-C | [95] |
| Niger | 5 | 2006–2010 | OPV type 2 / HEV-C | [95] |
| Cambodia | 3 | 2005–06 | OPV type 3 / HEV-C | [106] |
| India | 16 | 2009–10 | OPV type 2 / HEV-C | [97] |
| Madagascar | 10 | 2001–02 | OPV type 2 / HEV-C | [88] |
| 2005 | OPV type 3 / HEV-C | [90] |