Among these 3,058 persons have completed 28 days of their observation periods

Over 15,900 persons are under observation, surveillance, or home quarantine across the country but India has had no additional cases of the novel coronavirus after the three patients diagnosed in Kerala, the Union health ministry said on Thursday.

All three patients are stable, two of them have already tested negative for the coronavirus, and one has been discharged, health minister Harsh Vardhan said, briefing reporters about India’s actions to prevent local spread of the virus.

“We’re on high alert — we’ve had good, effective coordination among ministries, we have a robust surveillance system, and a network of laboratories to support diagnosis,” Harsh Vardhan said.

The 15,991 persons under follow-up for 28 days mainly include persons who have returned from China over the past month and their close contacts. Among these 3,058 persons have completed 28 days of their observation periods.