WHO has published Yellow fever situation report. Click or tap through for maps and to download the full report. The summary:
Angola: 2420 suspected cases
As of 19 May 2016, Angola has reported 2420 suspected cases of yellow fever with 298 deaths. Among those cases, 736 have been laboratory confirmed. Despite vaccination campaigns in Luanda, Huambo and Benguela provinces circulation of the virus in some districts persists.
Three countries have reported confirmed yellow fever cases imported from Angola: Democratic Republic of The Congo (DRC) (39 cases), Kenya (two cases) and People’s Republic of China (11 cases). This highlights the risk of international spread through non-immunised travellers.
Democratic Republic of The Congo: 44 laboratory confirmed cases
On 22 March 2016, the Ministry of Health of DRC confirmed cases of yellow fever in connection with Angola. The government officially declared the yellow fever outbreak on 23 April. As of 19 May, DRC has reported five probable cases and 44 laboratory confirmed cases: 42 imported from Angola, reported in Kongo central province and Kinshasa and two autochthonous cases in Ndjili, Kinshasa and in Matadi, Kongo Central province. The possibility of locally acquired infections is under investigation for at least eight nonclassified cases in both Kinshasa and Kongo central provinces.
Uganda: 60 suspect cases
In Uganda, the Ministry of Health notified yellow fever cases in Masaka district on 9 April 2016. As of 19 May, 60 suspect cases, of which seven are laboratory confirmed, have been reported from three districts: Masaka, Rukungiri and Kalangala. According to sequencing results, those clusters are not epidemiologically linked to Angola.
The risk of spread
The virus in Angola and DRC is largely concentrated in main cities. The risk of spread and local transmission to other provinces in the three countries remains a serious concern. The risk is high also for potential spread to bordering countries especially those classified as low risks for yellow fever disease (i.e. Namibia, Zambia) where the population, travellers and foreign workers are not vaccinated against yellow fever.
The outbreak in Angola remains of high concern due to:
• Persistent local transmission in Luanda despite the fact that more than seven million people have been vaccinated.
• Local transmission reported in seven highly populated provinces including Luanda.
• The continued extension of the outbreak to new provinces and new districts.
• High risk of spread to neighbouring countries. Confirmed cases have already travelled from Angola to DRC, Kenya and People’s Republic of China. As the borders are porous with substantial crossborder social and economic activities, further transmission cannot be excluded. Viraemic patients travelling pose a risk for the establishment of local transmission especially in countries where adequate vectors and susceptible human populations are present.
• Inadequate surveillance system capable of identifying new foci or areas of cases emerging.
• High index of suspicion of ongoing transmission in areas hard to reach like Cabinda.