Mali said it was reinforcing health controls at border posts but has no plans to close its frontiers after a man with Ebola arrived from Guinea and infected others including a nurse who has died of the virus, Reuters reported. President Ibrahim Boubacar Keita also urged the World Health Organisation (WHO) and health services in Mali and neighbouring states to set up a permanent information exchange to disseminate information about public health and hygiene. The worst outbreak of the virus on record has claimed at least 5,160 lives in Liberia, Sierra Leone and Guinea and has led to a global watch for cases outside the region. Mali shares an 800 km (500 mile) border with Guinea. "The president of the republic has asked the prime minister to urgently look at the entire system put in place to fight Ebola and to strengthen health controls at the different frontier posts," a government statement said . The nurse's death on Tuesday prompted the quarantine of more than 90 people including U.N. peacekeepers. In its first case, a two-old-girl infected with Ebola in Guinea arrived in Mali and died last month.