World’s first dengue vaccine beats three virus strains

PARIS/LONDON (Reuters) – The world’s first vaccine against dengue, developed by French drugmaker Sanofi SA, has shown the ability to protect against disease caused by three of four virus strains in a keenly awaited clinical trial in Thailand. Sanofi said on Wednesday the proof of efficacy was a key milestone in the 70-year quest to develop a viable dengue shot, adding the results also confirmed the safety profile of the vaccine candidate. Other drug companies are also working on dengue vaccines but Sanofi’s product is several years ahead. …