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Tables are below; tables and text are at http://www.polioeradication.org/Dataandmonitoring/Poliothisweek.aspx
Although global WPV incidence saw steep declines in January through March, there was little progress in Afghanistan, Pakistan and Nigeria, the three remaining endemic countries.
WPV Type 1 predominated; data on circulating vaccine derived poliovirus, not presented here, showed Type 2 to be predominant.
WIld Poliovirus (WPV) cases
Total cases |
Year-to-date 2012 |
Year-to-date 2011 |
Total in 2011* |
Globally |
36 |
78 |
650 |
- in endemic countries |
33 |
31 |
341 |
- in non-endemic countries |
3 |
47 |
309 |
Case breakdown by country
Countries |
Year-to-date 2012 |
Year-to-date 2011 |
|
Date of most |
||||||
WPV1 |
WPV3 |
W1W3 |
Total |
WPV1 |
WPV3 |
W1W3 |
Total |
|||
Pakistan |
13 |
1 |
1 |
15 |
24 |
|
|
24 |
198 |
11-Mar-12 |
Nigeria |
10 |
3 |
|
13 |
3 |
2 |
|
5 |
62 |
25-Feb-12 |
Afghanistan |
5 |
|
|
5 |
1 |
|
|
1 |
80 |
15-Feb-12 |
India |
|
|
|
|
1 |
|
|
1 |
1 |
13-Jan-11 |
Chad |
3 |
|
|
3 |
14 |
2 |
|
16 |
132 |
21-Feb-12 |
DR Congo |
|
|
|
|
26 |
|
|
26 |
93 |
20-Dec-11 |
Angola |
|
|
|
2 |
|
|
2 |
5 |
07-Jul-11 |
|
Niger |
|
|
|
|
1 |
|
1 |
5 |
12-Dec-11 |
|
CAR |
|
|
|
|
|
|
|
4 |
08-Dec-11 |
|
China |
|
|
|
|
|
|
|
|
21 |
09-Oct-11 |
Guinea |
|
|
|
|
|
|
|
|
3 |
03-Aug-11 |
Kenya |
|
|
|
|
|
|
|
|
1 |
30-Jul-11 |
Côte d'Ivoire |
|
|
|
|
|
|
|
|
36 |
24-Jul-11 |
Mali |
|
|
|
|
|
|
|
|
7 |
23-Jun-11 |
Congo |
|
|
|
|
1 |
|
|
1 |
1 |
22-Jan-11 |
Gabon |
|
|
|
|
1 |
|
|
1 |
1 |
15-Jan-11 |
Total |
31 |
4 |
1 |
36 |
73 |
5 |
0 |
78 |
650 |
|
Total in endemic countries |
28 |
4 |
1 |
33 |
29 |
2 |
0 |
31 |
341 |
|
Total outbreak |
3 |
0 |
0 |
3 |
44 |
3 |
0 |
47 |
309 |
|
Data in WHO as of 29 Mar 2011 for 2011 data and 27 Mar 2012 for 2012 data.