people under observation]
Hindustan Times, Kochi | By Ramesh Babu
UPDATED ON JUN 04, 2019 11:44 PM IST
Health officials said it was difficult to confirm the source of the virus as the patient had travelled to three districts in Kerala over the last 20 days. The officials have scanned the three areas where he stayed but they could not locate fruit bats or pigs, which are the main carriers of the virus.