A case of wild polio has emerged in Africa for the first time in five years, the World Health Organization has said. The BBC’s Focus on Africa reports that Malawian health authorities have declared an outbreak of wild poliovirus type 1 after a case was detected in the capital Lilongwe, the WHO said. The virus paralysed a three-year-old girl. Health authorities say a laboratory test found the strain to be the same as one circulating in Pakistan. The continent was declared free of indigenous wild polio in 2020.