In southern China, researchers at the world's largest 'mosquito factory' release millions of mosquitoes every week in a bid to reduce the spread of diseases like Zika and Dengue.

Natasha Howitt reports.

Sign up to our free newsletters

Get the best updates straight to your inbox:
Please select at least one mailing list.

You can unsubscribe at any time by clicking the link in the footer of our emails. We use Mailchimp as our marketing platform. By subscribing, you acknowledge that your information will be transferred to Mailchimp for processing.