Via The New York Times: Pakistan: Province Bars Entry to Those Not Vaccinated for Polio.
In the wake of World Health Organization travel restrictions imposed on Pakistan to stop it from spreading polio abroad, one Pakistani province said Tuesday that citizens from anywhere else in the country would not be able to enter it without proof that they had been vaccinated.
According to the news service Dawn, the health adviser to the chief minister of Punjab Province said vaccination booths would be set up at airports and all roads leading into the province, which includes the country’s second-largest city, Lahore.
While many countries impose vaccine requirements on foreign visitors, vaccine requirements within a country’s borders are almost unheard-of. Almost all of Pakistan’s polio cases occur in the northwest frontier areas, where resistance to vaccine is high.
Travel restrictions were also imposed Monday on Cameroon and Syria; they must ensure that anyone leaving their borders is vaccinated against polio.
I don't find this report on Dawn.com or in Punjab's English-language media, but it should turn up soon.