Dengue fever is a life threatening, mosquito-borne virus. Spread by the same mosquito that carries the Zika virus, half the world's population is now at risk - and it's on the rise. Around 400,000 people are hospitalised with the virus each year and thousands - mostly children - die. Filmed in the Philippines, USA, Mexico and Brazil, this shocking film charts the seventy-year search for an effective vaccine for this little-known killer.
Available on iTunes