The number of coronavirus hotspots, or "red zones", across India have fallen by around 23 per cent in 15 days, the government said on Thursday, from 170 on April 15 to 130 on April 30. However, in the same period, the number of "green zones", or districts reporting no new COVID-19 case, have decreased from 356 to 319, indicating the virus is spreading, albeit with reduced intensity, to previously unaffected areas of the country.