Angola and the Democratic Republic of Congo should speed up yellow fever mass vaccinations and should get better at spotting new cases to prevent the outbreak from spiralling out of control, the World Health Organization (WHO) said Thursday, according to dpa. The Geneva-based UN agency also said that all travellers to and from these two countries should get immunized. The UN health organization decided that the outbreak in both countries does not constitute a global health emergency at this point, as more and more people going in and out of Angola's capital Luanda are being vaccinated, WHO's emergencies chief Bruce Aylward said. Luanda has been at the centre of the outbreak that started late last year, resulting in 2,300 suspected infections and some 300 deaths so far in Angola.