Inside the world’s largest polio reservoir — the city of Peshawar

Al Jazeera
http://www.aljazeera.com/Services/Search/?q=vaccine
Accessed 15 February 2014

Inside the world’s largest polio reservoir
The city of Peshawar, in northwestern Pakistan, is a hotspot for the crippling virus.
Arsla Jawaid Last updated: 08 Feb 2014 14:43
Peshawar, Pakistan – Almost 60 years after Jonas Salk developed a vaccine for the polio virus, the crippling disease remains endemic in just three countries: Afghanistan, Pakistan, and Nigeria.

Of those, only Pakistan saw an increase in the number of cases reported last year, from 58 cases in 2012 to 93 in 2013. More than 90 percent of these were found to be genetically linked to a strain of the virus emanating from the northwestern city of Peshawar.

According to a statement released by the World Health Organization (WHO), all environmental sewage samples collected over the past six months in Peshawar have tested positive for the presence of poliovirus, making the urban centre of approximately four million the world’s “largest poliovirus reservoir”, or source of infection…