By Tom Miles GENEVA (Reuters) – A major yellow fever outbreak in Angola and two smaller flare-ups in Uganda and Congo are largely under control but countries have been warned to be vigilant in case the disease pops up elsewhere, the World Health Organization (WHO) said on Tuesday. Yellow fever is hard to spot early on and spreads quickly in towns, transmitted by the same mosquito that carries the Zika virus, which bites in the daytime and has flourished during the abnormal El Nino weather of the past year caused by the warming of the Pacific Ocean off the coast of South America. “What we hope is that El Nino will not be faster than we are,” said Sylvie Briand, head of WHO's department of pandemic and epidemic diseases.
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Vaccines put brakes on yellow fever outbreaks, more may pop up: WHO