Communicable disease threats report, 22-28 November 2015, week 48

Surveillance report
Publication series: Communicable Disease Threats Report (CDTR)
Time period covered: 22 - 28 November 2015

​The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 22-28 November 2015 and includes updates on Zika virus, Ebola virus disease and Influenza A(H5N1).

Executive summary

This issue covers the period 22-28 November 2015, and includes updates on Zika virus infection, Ebola virus disease and Influenza A(H5N1).

Zika – Multistate (world) 
The first cases of Zika virus infection (ZIKV) infection have been reported in Guatemala and El Salvador. There are still ongoing outbreaks in Colombia, Brazil and the Pacific. Possible links between ZIKV infection in pregnancy and microcephaly of the foetus have been under investigation since October 2015 when the Brazilian Ministry of Health reported on an unusual increase in cases of microcephaly after the ZIKV outbreak in the north eastern states. Similar findings have also been reported from French Polynesia.

Ebola virus disease – West Africa – 2014–2015 
Three confirmed cases of Ebola virus disease were reported from LiberiaIn the week leading up to 22 November, WHO reported a family cluster of three confirmed cases of Ebola virus disease (EVD) from Liberia, a country that had been previously declared Ebola-free two times this year, in July and September. In addition, 149 contacts have been identified, including ten health workers who had close contact with one of the cases prior to his isolation.Investigations to establish the origin of infection are at an early stage. 

Influenza A(H7N9) –China – Monitoring human cases 
One new case of avian influenza A(H7N9) notified in ChinaOn 24 November, one new case of Influenza A(H7N9) was reported from the Guangdong province in China. Since the detection of the virus in 2013, 681 cases have been reported with 275 deaths.