Polio Incidence in India
India
The number of cases for 2009 is 284: 38 cases are type 1, 245 are type 3 and one is a type 1/type 3 co-infection. Last year at the same time, India had 397 cases: 20 type 1 and 377 type 3.
Sub-national Immunization Days (SNIDs) began on 9 August, with Uttar Pradesh using mOPV3 vaccine in most areas and mOPV1 in some districts with recent WPV1 cases. Bihar used tOPV except in those districts with recent WPV1 transmission where mOPV1 was used.
While type 3 transmission is consistently high, it is focused around the traditional high-intensity transmission districts of western UP. As interrupting type 1 remains the overarching priority, the strategic choice of vaccine alternates between mOPV1 and mOPV3, with preferential use of mOPV1 in targeted areas.
As part of Bihar's Kosi River Task Force, which is designed to increase access in this difficult-to-reach area, the Munger sub-regional office has been relocated to Khagaria to be closer to the high- risk areas.
SNIDs ran from 9 August, with Uttar Pradesh using mOPV3 vaccine in most areas and mOPV1 in some districts surrounding recent WPV1 cases. Bihar used tOPV except in those districts with recent WPV1 transmission.
The next Supplemental Immunization Activities (SIAs) are scheduled for 10 September in UP and 13 September in Bihar, using mOPV1. Following that, it is hoped that SIAs in early November will use the new bivalent oral polio vaccine, which will tackle both WPV1 and WPV3 serotypes concurrently.
Four VDPVs have been confirmed in 2009. Three VDPV type 2, and one VDPV type 1. There is no evidence of secondary spread with any of these VDPVs
Polio Incidence Score Board updated 15th August 2009
| Area | 2008 | 2009 |
| Global | 1651 cases in 18 countries (1505 in 4 endemic countries) | 741 in 19 countries (540 in the four endemic countries) |
| India | 559 cases in 90 revenue districts (305 UO and 233 in Bihar) P1 75, P3 484 | 206 cases UP = 159, Bihar = 41, Delhi = 4, Rajasthan =1, Uttarkhand = 1, P1 -31, P3 – 174, P1+P3 = 1 |