Mussoorie, May 23 -- The state government on Thursday instructed chief medical officers (CMOs) to increase surveillance and remain vigilant regarding Covid-19 amid a fear of reports of rise in Covid cases. "While Uttarakhand currently has no confirmed Covid-19 cases the chief medical officers of all districts have been urged to remain vigilant regarding Covid-19, following an alert from the Centre .and although the situation remains normal an increase in patient numbers has been observed in states like Tamil Nadu, Maharashtra, and Kerala over the past week," Dr Sunita Tamta, in charge director general of the state health department, said in her letter to CMOs. "All chief medical officers are instructed to fortify the Covid-19 surveillance system and individuals exhibiting symptoms of the virus must undergo mandatory testing. Positive Covid-19 samples are to be sent for Whole Genome Sequencing to the designated testing centres with all Covid-19 related information... must be updated daily on the Integrated Health Information Portal of Integrated Disease Surveillance Programme (IDSP)..."...