We still maintain that travel is not to be interrupted in the world at this point of time.

So that brings us to two countries that have interrupted transmission as the outbreak containment continues.

Today, one of the most important means of spreading diseases around the globe is air travel.

Polio is not only an issue in Indonesia ... but it's an international issue. That virus, just as it came here from the African continent, could now go from here to a neighboring country and become implanted in that country if protection rates for polio were low.

It might be a bloody cheek. But so what? It goes on all the time. Chefs travel the world looking for dishes and try to imitate them in their own menus. That's how good cooking spreads - it's what food is all about. Frankly, in my view, it doesn't matter a damn.

The element of time-travel is handled far more intelligent in Harry Potter.