Humanitarian Health Action

Pakistan prepared for polio high season

31 July 2017 -- At the end of May 2017, more than 38 million children under the age of 5 were vaccinated against polio in Pakistan. The end of the May polio campaign marked the start of the “high season” for poliovirus transmission. The ability of the poliovirus to infect children increases in high temperature and during heavy rainfall. As a result, viral circulation is expected to be higher from June to September.