Nearly a dozen Indian states have imposed a partial lockdown in high-risk areas after spikes in coronavirus cases, with the country's infections topping 900,000 just three days after crossing the 800,000 mark.

India joins a number of countries and cities across the globe in reimposing localised lockdowns and other restrictions in the face of new outbreaks of the disease that has infected more than 13 million worldwide.

In all, India has more than 936,000 cases of the novel coronavirus, with nearly 30,000 new infections reported on Wednesday, according to data from the federal health ministry, the third-highest total in the world behind Brazil and the United States.

India's health ministry stressed on Tuesday that the number of people who had recovered from the virus was higher than the number of confirmed active cases. Of approximately 900,000 registered infections, some two-thirds had recovered and been discharged from hospitals.