Wild poliovirus outbreak in the Horn of Africa: WHO

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Polio vaccination campaign

The Horn of Africa is currently experiencing an outbreak of wild poliovirus type 1 (WPV1), according to the World Health Organisation (WHO).

It says an alert for enhanced surveillance for polio has been issued to all countries across the Horn of Africa, highlighting the need to conduct active searches for any suspected cases. All countries are urged to rapidly identify sub-national surveillance gaps and to take measures to fill the gaps.

The agency reports that a four-month-old girl near Dadaab, Kenya, developed symptoms of acute flaccid paralysis (AFP) on 30 April 2013. Two healthy contacts of the child tested positive for WPV1.

WHO says they are the first laboratory confirmed cases in Kenya since July 2011 and an investigation into this outbreak is ongoing. In addition, a case of WPV1 in Banadir, Somalia was confirmed on 9 May 2013.

And it says in response to the outbreak, the first vaccination campaign, reaching 440 000 children began on 14 May 2013 in Somalia and a second round of vaccination is planned for 26 May 2013 in synchronization with the affected parts of Kenya.

The UN health agency warns that the risk to neighbouring countries is deemed as very high, due to large-scale population movements across the Horn of Africa and persistent immunity gaps in some areas. Dadaab hosts a major refugee camp, housing nearly 500 000 persons from across the Horn of Africa.

In 2005, polio spread east across the African continent, and into Yemen and the Horn of Africa, resulting in over 700 cases.

WHO's International Travel and Health recommends that all travellers to and from polio-infected areas be fully vaccinated against polio.

Donn Bobb, United Nations.

Duration: 1’42″

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