India’s coronavirus cases have passed 800,000 with the biggest spike of 27,114 cases in the past 24 hours, causing nearly a dozen states to impose a partial lockdown in high-risk areas.

The new confirmed cases took the national total to 820,916. The Health Ministry on Saturday also reported another 519 deaths for a total of 22,123.

A surge in infections saw the cases jumping from 600,000 to more than 800,000 in nine days. The ministry said the recovery rate was continuing to improve at more than 62%.

Eight of India’s 28 states, including the worst-hit Maharashtra, Tamil Nadu and New Delhi, account for nearly 90% of all infections.

The most populous state of Uttar Pradesh, with nearly 230 million people, imposed a weekend lockdown while several others announced restrictions in districts reporting major spikes.