There are no conclusive answers about the cause of three deaths in Johannesburg, thought to have been haemorrhagic fever.

A hundred and twenty people are now under observation after coming into contact with the three people who died from suspected haemorrhagic fever.

A 51-year-old woman has been admitted to the Chris-Hani Baragwanath Hospital with symptoms of a killer disease, suspected to be haemorrhagic fever.