India COVID-19 cases cross 12,759, death toll 420; All 6 metros among 170 districts marked as COVID-19 red zones; E-commerce firms allowed to resume services after April 20; Aviation Ministry directs airlines to fully refund tickets booked during lockdown; Spike in Surat COVID-19 cases, curfew in 5 areas until April 22; 11 COVID-19 patients test negative in Andaman and Nicobar Islands and more...