Smallpox was once a common, deadly disease, that killed a third of those who contracted it. 200 years ago, it was discovered that vaccination could prevent smallpox. Learn more about the fight against smallpox in our video (turn on subtitles in your language)!
This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 24-30 November 2019 and includes updates on Ebola virus disease, Lassa fever, influenza, cholera, polio and West Nile virus.
On 20 and 24 November 2019, respectively, the Dutch public health authorities confirmed two imported cases of Lassa fever from Sierra Leone. Both were Dutch healthcare workers who worked in a rural hospital in Sierra Leone.