Kathmandu, July 29 -- The Ministry of Health said on Tuesday that 53 new Covid-19 cases were reported in Kathmandu Valley, the highest for a single day, raising an alarm, as public health experts warned of community spread of the virus.

Of the 48 cases reported in Kathmandu district, 27 are Nepal Police personnel, according to the ministry. Four cases were reported from Lalitpur and one from Bhaktapur.

Four people who tested positive for Covid-19 had come in contact with the police personnel infected with the virus, according to Dr Basudev Pandey, director at the Epidemiology and Disease Control Division. Likewise, 13 others who tested positive for the virus had entered the Valley recently.

Public health experts said the Valley could b...