For a pandemic of moderate severity, this is one of our greatest challenges: helping people to understand when they do not need to worry, and when they do need to seek urgent care.

For the first time in history, we can track the evolution of a pandemic in real-time... Influenza viruses are notorious for their rapid mutation and unpredictable behaviour.

After all it really is all of humanity that is under threat during a pandemic.

The possible impact of the virus [Zika] an extraordinary event and a public health threat to other parts of the world.

Influenza pandemics must be taken seriously precisely because of their capacity to spread rapidly to every country in the world.

I think U.N. organizations are important organizations. They exist for good reasons. And we also admit that there is room for us to improve the way we do business. The WHO will be a very positive and proactive partner in the overall U.N. reform, which is also important.

I am personally overseeing changes that include the establishment of a global health emergency workforce.