1) To protect at-risk populations;
2) To prevent international spread of the disease;
3) To contain outbreaks rapidly.
Risk classification of countries:
YF outbreaks reported between 1990 and 2016;
YF cases (with local transmission) reported between 2011 and 2016;
National MVCs conducted prior to the Yellow Fever Initiative;
Evidence of YF circulation from serosurveys in vaccination-naive populations.
Weekly epidemiological record Relevé épidémiologique hebdomadaire 21 APRIL 2017, 92th YEAR / 21 AVRIL 2017, 92e ANNÉE No 16, 2017, 92, 193–204
http://apps.who.int/iris/bitstream/10665/255040/1/WER9216.pdf?ua=1
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