Coronavirus: India prepares to test vaccine delivery system; Singapore bans visitors from South Africa

India will test its Covid-19 vaccine delivery system with a nationwide trial on Saturday as the South Asian nation prepares to roll-out an inoculation programme to stem the world’s second-worst outbreak.The federal health ministry has reviewed preparedness and asked state governments to ensure the effectiveness of the programme, the government said in a statement Thursday.Prime Minister Narendra Modi said in a speech on Thursday the country was preparing to give indigenously manufactured shots…