The Centre for Covid-19 Situation Administration (CCSA) is urging more people, particularly the estimated 40 million people of working age, to download and install the MorChana Covid-19 location tracking app help contain Covid-19. Currently the app has been downloaded 6.79 million times and registered by more than 4.83 million users, while at least 10 times this number is required to ensure an effective ecosystem for containing the spread of Covid-19 in the country, said CCSA spokesman Taweesilp