Papua New Guinea authorities have declared a public health emergency in response to the prolonged cholera outbreak in the capital Port Moresby after five more people died. There are fears the outbreak could become a major epidemic. Health Minister Sasa Zibe said yesterday the declaration gave health authorities greater powers to contain the outbreak. The government can shut down food and drink stalls and prevent people moving to and from infected areas, he said. Up to 100 deaths have been blamed on the outbreak.