This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 24-30 June 2018, and includes updates on Vibrio growth in the Baltic sea, polio, Ebola virus disease, West Nile Virus, and mass gathering monitoring – FIFA World Cup 2018.

This is an updated assessment of the risks associated with the Zika virus epidemic in affected countries, EU Overseas Countries and Territories, and Outermost Regions and in EU Member States within continental Europe.

Australia has reported a cluster of oseltamivir-resistant influenza A(H1N1)2009 cases in the state of New South Wales. The cases had no known link to oseltamivir exposure and individuals were not immunosuppressed, but they were closely linked geographically. Samples from the cluster do not currently exhibit any resistance to zanamivir.