Dr Tedros Adhanom Ghebreyesus said it was moving faster than any previous one and had a high risk of spreading to other countries in the region.
READ MOREFear of Ebola is keeping pregnant women away from healthcare facilities in eastern Democratic Republic of Congo, raising the risk of stillbirths, premature births and maternal deaths as the country's deadliest Ebola outbreak continues to disrupt routine medical care.
Responders are warning the deadly haemorrhagic virus is spreading at an unprecedented rate, outpacing efforts to slow it in the remote eastern part of the country.
She spread conspiracy theories online.
It happened not far from the Isle of Wight Needles.
Four decades ago, hardly anyone in South Africa had HIV. Today, roughly one in eight people here are living with the virus. HIV has quite simply become a routine part of life in South Africa.
Adam Hall, 42, faces five allegations of rape in relation to five male victims and seven further counts of GBH relating to the transmission of the virus.
Portia Vincent has been missing since February
'I'm never going to touch tuna again.'
An investigation found Sara Morris took part in dozens of races while claiming for MS.
There are not enough beds in South Africa’s 13 psychiatric hospitals.
Gonorrhoea is a sexually transmitted infection known for its ability to mutate to evade the antibiotics used to treat it quickly. Its symptoms include pain when urinating and genital discharge, but many people don’t notice any symptoms at all.
The product poses a 'significant risk' to some people.
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