RT Journal
A1 Friedrich MJ
T1 POlio lingers in pakistan
JF JAMA
JO JAMA
YR 2012
FD December 19
VO 308
IS 23
SP 2449
OP 2449
DO 10.1001/jama.2012.128610
UL http://dx.doi.org/10.1001/jama.2012.128610
AB 
The researchers surveyed 1017 parents of young children living in the country's largest city, Karachi. They also interviewed 30 parents of Pashtun ethnicity, who have the highest rates of polio in the country, who refused to vaccinate. Reasons commonly cited for refusing vaccination include lack of knowledge about the vaccine, lack of faith in the vaccine's effectiveness, misperceptions about adverse effects such as infertility, and fear that the vaccine may contain religiously forbidden ingredients.