Measles is a highly contagious viral infection. Complications can be severe, especially in young children and adults. There have been several cases of people dying of measles in Germany. But there is a vaccination.
Polio is nearly eradicated — but not quite. Some countries continue to battle the disease. DW reviews the situation on the birthday of Jonas Salk, the US virologist who developed one of the first successful vaccines.
The World Health Organization has warned of a "dramatic increase" in measles infections in Europe in the first half of 2018. It said the situation was most alarming in Ukraine, and urged countries to boost immunization.
In an exclusive interview with DW, Nobel Prize winner Harald zur Hausen talks about cancer-causing viruses and his incomprehension towards vaccination scpeticism.
Aeroplanes allow us to travel all over the world. We can cover vast distances in a short space of time. But often when we fly, there are thousands of potentially harmful viruses tagging along for the journey.
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