(PNA file photo) LEGAZPI CITY - The Department of Health in Bicol (DOH-5) is optimistic of achieving its target to inoculate 138,457 children under the government's routine childhood immunization program against vaccine-preventable diseases in the region. Dr. Monrey Isaiah Mancilla, regional medical coordinator for the national immunization program, said the dedication and hard work of health workers as well as the help of local government units (LGUs) boosted their goal to immunize more children. "The DOH-5 and the LGUs in Bicol are conducting every Wednesday 'Brgy. Bakuna Day' as well as catchup immunization activities regularly to ensure that infants below one-year-old will receive the vaccines. For the parents, they may reach their barangay health workers to know more about the available vaccines," Mancilla told the Philippine News Agency on Monday. He also encouraged parents to take advantage of the immunization programs given by the agency and make sure to c