At least 436 people, who returned to Kerala from China in recent days, are under observation for possible exposure to the novel coronavirus (nCoV), health officials said on Monday.
Five people are still under observation in isolation wards at various hospitals across the state, officials said, adding, all results of blood samples sent to the National Institute of Virology at Pune have been found to be negative for the virus.
While three people are in hospitals at Ernakulam, one each are in Thiruvananthapuram and Thrissur, officials said.
Two people, admitted earlier to hospitals in Pathanamthitta and Malappuram, have been discharged.
Health minister K K Shylaja said necessary steps were being taken by coordinating with district medical officers.
"We have also opened isolation wards even though we have not received any positive cases in the state," she told the media.
Meanwhile, Kerala Chief Minister Pinarayi Vijayan urged Prime Minister Narendra Modi to arrange for airlifting stranded Indians from coronavirus affected Wuhan province in China, including those from the Southern state.
Sharing the concern of Kerala, Vijayan, in a letter to Modi, said the ground situation in the province has worsened and the state had information from relatives of students from Kerala studying at various Universities there that the situation there was "grave."