The organisers of the annual Hajj pilgrimage in Saudi Arabia know a thing or two about dealing with large crowds and keeping them safe from disease. We hear how they’re comparing experiences with those behind the biggest sporting and political events of the decade.

And why a peaceful countryside scene can take away pain.

Available now

28 minutes

Last on

Sun 24 Oct 2010 21:32 GMT

Zika: a new pandemic?

Zika virus emerggency talks

The explosive spread and impact of the mosquito-borne virus.