Mexico City/New Delhi: At a time when India is struggling with rising number of dengue cases with each passing year, the Mexican government has approved the world's first anti-dengue vaccine which is designed to protect people in the 9-45 age group from nine to 45 years from all four subtypes of the virus.

Called Dengvaxia, the vaccine has been developed by France-based Sanofi Pasteur and is the result of an extensive clinical development programme running for almost two decades.