Health officials investigate mystery disease in southwest Congo after 143 deaths CNNUnknown disease kills 143 people in south-west DRC, local authorities say The GuardianUnknown disease in DRC leaves dozens dead, officials say EuronewsMystery disease has killed dozens in Congo; experts arrive to try to ‘identify the problem’ OregonLiveUnknown disease kills 143 in the Congo sparking fresh pandemic fears Daily Mail