At least 79 people have died from an unknown disease that is causing flu-like symptoms in south-western Democratic Republic of Congo, the health ministry says.

The health ministry says the majority of people who have died are between the ages of 15 and 18.

More than 300 people have been infected with patients exhibiting symptoms like fever, headaches, runny noses and coughs, breathing difficulties and anaemia.

Response teams have been sent to Kwango Province, specifically the Panzi health zone, where the disease is most common, to manage cases and investigate the nature of the disease.