COVID-19: Experts left puzzled by sudden drop in coronavirus cases in India

Scientists have been left confused by the plummeting rate of coronavirus infections in India - particularly because the country was at one point on course for the biggest toll worldwide. Nearly 100,000 infections were reported each day during India's peak, but this has taken an unexplained tumble since September to around 11,000 a day. Official figures in November also showed 90% of New Delhi's critical care beds with ventilators were filled, whereas just 16% were full last Thursday.