Vaccine
Volume 33, Issue 29, Pages 3263-3434 (26 June 2015)
http://www.sciencedirect.com/science/journal/0264410X/33/29

Protocol versus practice of supplementary immunization activity (SIA) for polio eradication in Pakistan
Page 3270
Ali Sibtain Farooq Sheikh
Highlights
:: Currently oral polio vaccine is made extensively available in Pakistan.
:: Children are getting more vaccine dose than required.
:: Subsequently risk of vaccine-derived poliovirus could increase many fold.
:: With all efforts towards polio eradication, other routine vaccinations get delayed.
:: Cross-referencing and tracking of vaccinated pool should be made more effective.