The current spread of polio poses an international emergency and public health threat that could undermine efforts to eradicate the disease, the World Health Organization warned on Monday.
The only other time the United Nations body stated that conditions for a Public Health Emergency of International Concern (PHEIC) were warranted was in 2009, during the H1N1 pandemic.
There have already been documented cases of the crippling disease being internationally transported in Asia, the Middle East and Africa, and the WHO cites the fact that these have happened during low transmission season as cause for particular concern.
In addition to Pakistan, Cameroon and Syria, countries the international spread of wild poliovirus has occurred, seven other states are experiencing polio infections: Afghanistan, Equatorial Guinea, Ethiopia, Israel, Nigeria, Somalia and Iraq.
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