The majority of the probable cases in Angola have been ruled out as yellow fever cases by the Institut Pasteur of Dakar. They will remain classified as probable cases until a full battery of tests has been run to determine other possible causes of illness. Once the final results are received the cases will be reclassified. Coincidentally, a previously scheduled pre-emptive vaccination campaign is ongoing in Kwanza Sul province where two new probable cases were reported. EPIDEMIOLOGICAL SITUATION Angola Two new probable cases without a history of yellow fever vaccination were reported from Kwanza Sul province in the last week. Of the forty-five probable cases that were reported in the four weeks to 13 October: 31 have been discarded, two are undergoing further testing and 12 await classification by the committee (Fig. 1). From 5 December 2015 to 20 October 2016 (Table 1): o 4347 suspected cases, with 377 deaths (case fatality rate, CFR: 8.7%); o 884 cases have been laboratory confirmed, with 121 deaths (CFR: 13.7%). 4BABAY ZIKA VIRUS SITUATION REPORT YELLOW FEVER 28 OCTOBER 2016 2 Since the start of the outbreak, suspected cases have been reported from all 18 provinces; confirmed cases have been reported from 80 districts in 16 provinces (Table 2). Autochthonous transmission has been reported from 45 districts in 12 provinces.