Deaths from malaria in Angola this year look set to outstrip 2015 as a health crisis that includes one of the country's worst yellow fever outbreaks in decades spreads, the World Health Organisation said.

Angola recorded 2,915 deaths from malaria in the first quarter of this year, compared with 8,000 for the whole of 2015 and 5,500 the previous year, the WHO told Reuters on Monday.

Ospina said uncollected garbage in Luanda due to government budget cuts and a record amount of rainfall had contributed to high cases of malaria, yellow fever and chronic diarrhoea.

A yellow fever outbreak has killed at least 225 people in Angola and 21 in the Democratic Republic of Congo, according to data from two weeks ago. The WHO has warned the epidemic poses a global threat.

Angola's budget has been slashed, debts are rising and the currency has plummeted this year as depressed oil prices hit the finances of Africa's second largest crude exporter.