KOLKATA: Six people who were diagnosed with dengue died in West Bengalon Friday, taking this year's toll in the state to over 30, officials said. Two patients died at a private hospital in Kolkata while undergoing treatment. One of them was a resident of Salt Lake and the other was from Bagha Jatin, they said. Two persons died in Ghatal in Pachim Medinipur, and two persons died in nearby Kharagpur, they...