The doubling rate of COVID-19 cases in India has dropped to 6.2 days over the past week, as compared to three days before the lockdown was imposed last month, the government said today, adding that there had been a 40 per cent decline in the growth of new cases. The decline is the result of increased testing, including that of patients suffering from SARI (severe acute respiratory illness) and ILI (influenza-like illness), the government added.