India reported its smallest daily increase in coronavirus infections in nearly three weeks on Saturday, with deaths still near the 4,000-mark, but federal health officials said cases and fatalities are rapidly stabilising in this wave of the pandemic.

The overall rate of positive cases per tests had dipped to 19.8 percent this week from 21.9 percent last week, federal health officials said in a briefing, but warned that cautiousness must continue.

Randeep Guleria, director of AIIMS Hospital in Delhi warned that secondary infections like mucormycosis or “black fungus” were adding to India’s mortality rate with states having reported more than 500 cases recently in Covid-19 patients with diabetes.

Earlier in the day, Prime Minister Narendra Modi told officials to focus on distributing resources including oxygen supplies in the hard-hit rural areas, according to a government statement.

He also called for more testing in India’s vast countryside, which is...