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'Nightmare scenario' avoided as Nigeria is declared Ebola-free

Nigeria has been declared officially free of Ebola after a 42-day period with no new cases, the World Health Organisation (WHO) has said.

The announcement eases fears that the disease could have spread to one of Africa's most densely-populated areas.

Commuters and traders crowd at a market in Nigeria's largest city Lagos Credit: REUTERS/George Esiri

WHO Director General Dr Margaret Chan said on Sunday that the appearance of the virus in Lagos would have been "the worst nightmare scenario anyone could imagine".

She said the nation's innovative polio campaign, which uses satellite technologies to track population, had been re-purposed to aid the fight against Ebola.

Last week, the WHO announced that Senegal was Ebola-free, but the pace of the outbreak continues to quicken in the three worst-hit countries.

E-cigarettes contain 'cancer causing substances'

E-cigarettes contain "a few cancer causing substances" and there is not enough evidence that they help smokers to quit, according to a World Health Organisation (WHO) manager who is calling for their regulation.

Dr Armando Peruga, Programme Manager of WHO's Tobacco Free Initiative said nicotine is "a key component of electronic cigarettes and affects the brain development of adolescents and foetuses of pregnant women."

He added: "Electronic cigarettes contain nicotine and other chemicals and usually a few cancer causing substances although a much lower level than a conventional cigarette, it doesn't mean that there not without risk."

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