We have been advising countries around Syria to apply the WHO recommendations in the International Travel and Health with the following link:
WHO recommendations for the vaccination of all travellers to/from polio-infected areas is included in Chapter 6 of the WHO document ‘International Travel and Health’ at
http://www.who.int/ith/chapters/ith2012en_chap6.pdf.http://www.who.int/ith/chapters/ith2012en_chap6.pdf.
In practical terms, where possible, refugees from polio infected countries should be fully vaccinated against polio and given a booster dose. As an additional measure, hosting countries could also give a dose of OPV on arrival (similar to what Saudi Arabia does for Hajj pilgrims). For under-vaccinated arriving children, complete full vaccination series.
Hamid Syed Jafari
Director of Polio Operations and Research
Polio Eradication Initiative
World Health Organization