Summary of public health threats, CDTR week 21, 2016
The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals about active public health threats. This issue covers the period 22-28 May 2016, and includes updates on seasonal influenza in Europe, the Zika virus infection, the yellow fever outbreak in Africa and poliomyelitis.
Seasonal influenza – Europe
In week 20/2016, influenza activity continued to decrease in the WHO European Region. Most countries (98%) reported low intensity.
Weekly online reporting for the 2015-2016 influenza season ends this week and will start again in week 40 for the next season. During the summer months, weekly reporting continues and the Flu News Europe online bulletins will be published monthly.
Zika virus infection
As of 26 May 2016, 51 countries and territories have reported autochthonous cases of Zika virus infection during the past nine months. There is now a scientific consensus that Zika virus is a cause of microcephaly and Guillain-Barré syndrome. Given this scientific consensus on the evidence of adverse pregnancy outcomes associated with Zika virus infection, ECDC recommends that pregnant women postpone non-essential travel to Zika-affected areas.
During the past week, WHO AFRO reported that sequencing of the Zika virus in Cape Verde by Institut Pasteur in Dakar confirmed that the virus currently circulating in Cape Verde is the same as the one circulating in the Americas - the Asian type and was most likely imported from Brazil. This is the first time that the Asian Zika strain has been detected in Africa.
In Brazil, the Ministry of Health informed the International Olympic Committee about the measures being taken to prevent and control Zika virus infections during the Olympics.
Rapid risk assessment: Zika virus disease epidemic: potential association with microcephaly and Guillain–Barré syndrome, sixth update
Potential risks to public health related to communicable diseases at the Olympics and Paralympics Games in Rio de Janeiro, Brazil 2016
Yellow fever outbreak – Africa
An outbreak of yellow fever in Angola started in December 2015 in the municipality of Viana, Luanda province and spread to all the 18 provinces of Angola. A mass immunisation campaign is taking place.
The neighbouring Democratic Republic of Congo (DRC) reports imported cases of yellow fever and on 2 May the first confirmed autochthonous transmission in Kinshasa, the capital. On 5 may, DRC reported an additional autochthonous case in Kongo Central.
An outbreak of yellow fever not linked to the outbreak in Angola has been reported in several districts in Uganda.
Global public health efforts are ongoing to eradicate polio, a crippling and potentially fatal disease, by immunising every child until transmission of the virus has completely stopped and the world becomes polio-free.
During the past week, WHO reported one new wild poliovirus type 1 (WPV1) case in Pakistan. There were no official circulating vaccine-derived poliovirus (cVDPV) cases reported.
The latest global polio epidemiology is on the agenda of the 69th World Health Assembly (Geneva, 23-28 May, 2016).
Read the full CDTR:
Yellow fever transmission could affect urban areas in Brazil, increasing the risk to travellers, especially during Carnival
19 Jan 2018 - ECDC issues new risk assessment in light of the yellow fever resurgence in Brazil (in particular in São Paulo) and the expected increasing flow of travellers during the upcoming Carnival.
Yellow fever in Brazil: confirmed cases in urban areas in São Paulo and Rio de Janeiro
1 Dec 2017 - From July to October 2017 the Brazilian authorities reported three confirmed human cases of yellow fever - one in Rio de Janeiro and two in São Paulo State. One person died. In addition, several animal cases were detected in the urban area of São Paulo City. The national health authorities have started a vaccination campaign in São Paulo State.