Department of Health Center for Health Development in Ilocos Region (DOH-CHD-1) Covid-19 focal person Dr. Rheuel Bobis. (PNA file photo) MALASIQUI, Pangasinan - The Department of Health Center for Health Development in Ilocos Region (DOH-CHD-1) remains vigilant against the coronavirus disease 2019 (Covid-19) Omicron sub-variant despite zero cases in the region as of Thursday. "We are strengthening border control protocols in coordination with the local government units to ensure that everyone who enters the region will be screened for signs and symptoms of Covid-19," DOH-CHD-1 Covid-19 focal person Dr. Rheuel Bobis said in a virtual video presentation. Bobis said they are also in close coordination with the hospitals in the four provinces of the region in case the Omicron sub-variant enters the region. "We are also increasing the coverage of vaccination. The vaccine offers protection against any sub-variant of Covid-19," he said. Bobis said the Omicron sub-variant a