In India, it is estimated two million lorry drivers regularly use prostitutes - but barely 10% of them are using condoms. Health officials say there is a strong correlation between HIV infections and the routes used by truckers.

To help raise awareness, lorry-themed condoms are being sold. The colourful packaging of the Dipper brand has been designed to replicate the bright designs of India's trucks, and 45,000 packets were sold out in just a few days.