WHO has published this week's Yellow fever situation report. Click or tap through to download the full report. The key updates:
Angola epidemiological update (as of 18 August):
• There have been no new confirmed cases since 23 June;
• 3984 suspected cases, with 369 deaths (case fatality rate, CFR: 9.2%);
• 891 of 3984 suspected cases have been laboratory confirmed, with 120 deaths amongst confirmed cases (CFR: 13.6%);
• 16 of 18 provinces have reported at least one confirmed case, with local transmission.
Mass reactive vaccination campaigns
Mass reactive vaccination campaigns in Angola have been implemented in areas with confirmed local transmission. In addition, a preventive vaccination campaign targeting approximately three million people in phase I and additional two million people in phase II, was launched on 15 August.
The initial phase of the campaign aims to immunize at-risk populations in 22 districts, 17 of which are on, or close to Angola’s border with Democratic Republic of the Congo (DRC), Namibia, and Republic of Congo. As of 24 August, 2 982 134 people had been vaccinated — 76% of the target population for phase I campaign.
DRC epidemiological update (as of 25 August):
• 2410 suspected cases from eight of 26 provinces;
• 75 confirmed cases have been identified from 2164 suspected cases that have been laboratory tested, with 16 deaths (CFR: 21.33%);
• Of the 75 confirmed cases, reported from seven provinces:
• 57 acquired infection in Angola;
• 13 are autochthonous;
• 5 are cases of sylvatic transmission (not related to the outbreak); and
• one probable case remains under investigation in a new province (Sud Ubangi) in the North of the country.
Preventive vaccination campaign
A preventive vaccination campaign was launched in DRC on 17 August. The campaign aims to immunize over 8 million people in 32 Health Zones in Kinshasa province, and an additional 3 million people in 16 Health Zones on or near the border with Angola.
As of 24 August, 6 925 276 people have been vaccinated (91.3% of the target population) in Kinshasa. 730 190 people have been vaccinated in Kasai Central, Kasai, Kongo Central, Kwango and Lualaba for health zones that have reported.
The vaccination campaign in Kinshasa used the fractionated dose strategy, which is administered at one-fifth of the standard vaccine dose, and is only recommended for use in an emergency situation in the context of limited vaccine availability.