Health teams have identified 335,000 houses in Peshawar district for latest round of vaccinations.
The world’s largest democracy belies its reputation as liberal and secular.
The trial has roiled relations between New Delhi and Rome.
Anger over Sawan Masih’s alleged blasphemy resulted in a riot on the Joseph Colony neighborhood of Lahore last year.
Some 10 percent of candidates stand accused of crimes, including attempted murder and rape.
Both sides expected to meet for more talks in the next few days.
Islamabad says it is willing to act on any intelligence but claims it has not found any indication the border guards were brought into Pakistan.
Indian opposition leader claims he will follow the path of former premier Atal Vajpayee, who signed ceasefire with Pakistan in 2003.