Governments in Southeast Asia need to do more to combat the deadly H5N1 avian flu virus, say health officials. “What’s happening in Cambodia is yet another wake up call for the region not to be complacent,” Roy Wadia, public information officer for the Western Pacific Region for the World Health Organization (WHO), told IRIN. “There are multiple strains of avian influenza out there. It’s imperative that governments in the region ensure their public health systems are properly supported and strengthened.”