MALAPPURAM: The route maps of the two patients in Malappuram district who have tested positive for COVID-19 have been released. The flow charts released by the authorities show the places visited by the first patient from March 9 to 12 and the second patient on March 12 and 13. Malappuram District Collector has asked all those who have happened to be at those places at the said time to undergo screening by the health officials.