KENYA, SOMALIA, PAKISTAN, GLOBAL
A big worry among people trying to wipe out polio is that the virus will regain a foothold, somewhere to launch a comeback -- someplace, perhaps, like
Polio has paralyzed 25 children in
There were only 223 polio cases around the world in 2012, the lowest ever recorded. Even in the remaining 3 endemic countries --
This outbreak in
The recent cases are probably just the tip of the iceberg, says Sona Bari, from the World Health Organization (WHO). "The last time we saw an outbreak in this part of the world it involved
Just last week, Islamic extremists launched a suicide attack on the United Nations headquarters in
Despite the security problems in
When outbreaks like these occur, she says, the goal is to break the poliovirus's transmission cycle by trying to get more than 90 percent of the local population vaccinated.
"The virus is looking for children [susceptible individuals] in which it can circulate,"
This outbreak is still in its early stages, she says. And WHO expects to see more polio cases reported from
There have been 77 polio cases reported worldwide so far this year , compared with 84 to this point in 2012. But almost half of this year's  cases have occurred in
Global Polio Eradication Initiative update as of 26 Jun 2013
Wild poliovirus (WPV) cases
Total cases: Year-to-date 2013 / Year-to-date 2012 / Total 2012
Globally: 77 / 84 / 223
- in endemic countries: 46 / 80 / 217
- in non-endemic countries: 31 / 4 / 6
Case breakdown by country
Countries: 2013 WPV1 / WPV3 / W1W3 / Total 2013 // 2012 WPV1 / WPV3 /
W1W3 / Total year-to-date 2012 / Total 2012 // Date most recent case
Pakistan: 17 / 0 / 0 / 17 // 19 / 2 / 1 / 22 / 58 // 6 Jun 2013
Afghanistan: 3 / 0 / 0 / 3 // 10 / 0 / 0 / 10 / 37 // 6 Jun 2013
Nigeria: 26 / 0 / 0 / 26 // 33 / 12 / 0 / 45 / 122 // 18 May 2013
Total: 77 / 0 / 0 / 77 // 69 / 14 / 1 / 84 / 223 Total in endemic countries: 46 / 0 / 0 / 46 // 65 / 14 / 1 / 80 / 217 Total outbreak: 31 / 0 / 0 / 31 // 4 / 0 / 0 / 4 / 6
Data in WHO as of 26 Jun 2012 for 2012 data and 25 Jun 2013 for 2013 data.
- One new WPV case was reported in the past week (WPV1 from Nangarhar), bringing the total number of WPV cases for 2013 to 3. It is the most recent WPV case in the country and had onset of paralysis on [6 Jun 2013].
- All 3 WPV cases this year  were reported from the Eastern Region. In the traditional high-risk Southern Region, no WPV cases have been reported since November 2012.
- No new cVDPV2 cases were reported in the past week. The total number of cVDPV2 cases in 2013 remains 3. The most recent cVDPV2 case had onset of paralysis on [13 Mar 2013] (from
- No new WPV cases were reported in the past week. The total number of WPV cases for 2013 remains 26. The most recent WPV case had onset of paralysis on [18 May 2013] (WPV1 from Bauchi).
- No new cases of cVDPV2 were reported in the past week. The most recent cVDPV2 case had onset of paralysis on [24 Nov 2012] (from Kebbi).
- One new WPV case was reported in the past week (WPV1 from Bara in Khyber Agency, Federally Administered Tribal Areas - FATA), bringing the total number of WPV cases for 2013 to 17. It is the most recent WPV case in the country and had onset of paralysis on [6 Jun 2013].
- Bara is affected by an outbreak of WPV1, with 7 cases now confirmed since end-April . This outbreak is the major WPV reservoir in all of Asia, and is threatening progress achieved elsewhere in the country and in neighbouring
- In 2011 and 2012, Bara was the epicentre of a major outbreak which also spread to other areas.
- No new cVDPV2 cases were reported in the past week. The total number of cVDPV2 cases for 2013 remains 5. The most recent cVDPV2 case had onset of paralysis on [8 May 2013] (from Gadap town, greater
- One new cVDPV2 case was reported in the past week in
cVDPV2 case in the country and had onset of paralysis on [10 Apr 2013] (from N'Djamena).
- Genetic sequencing is ongoing to determine the origin of these latest cases, but it is likely that they are linked to the ongoing
cVDPV2 outbreak affecting
- A total of 6 new WPV cases were reported in the past week (WPV1s from
- The bulk of the newly reported cases are from Banadir, which remains the epicentre of the outbreak.
- Although newly reported cases are increasing, it is important to note that none of these cases represent breakthrough transmission since outbreak response activities began.
- However, of concern is that 2 cases have now been reported from districts in Lower Shabelle region in south-central
- Anecdotal feedback from the field indicates overall good coverage is being achieved, with strong community participation. The 4th round will start on [1 Jul 2013], again aiming to reach all age groups in Banadir.
- The security situation continues to be evaluated, especially following the deadly attack on the UN compound in
- Immunization campaigns are also planned and being conducted in other countries of the Horn of Africa, notably
- No new WPV cases were reported in the past week. The most recent case in the region was a WPV1 from Tahoua province in
Communicated by: ProMED-mail
There have been 22 new cases reported since the last ProMED-mail update on 14 Jun 2013, raising the global total of confirmed cases from 55 to 77. Sadly, the majority of newly confirmed cases are in countries that had been previously polio free --
The concerns about the possibility of expanded outbreaks occurring in other countries where wild poliovirus (WPV) transmission has been interrupted are real concerns. The continued occurrence of circulating vaccine derived poliovirus (cVDPV) cases serves as an indicator of suboptimal vaccination coverage in the areas, and these areas serve as foci where transmission of the WPV can continue.
Unfortunately, the 3 remaining endemic countries for WPV circulation, and
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