His face lights up into a bright smile when asked to translate the messages on the placard he is waving.

Yashwanth is one of the 200 students who have come to witness the historic launch of the measles-rubella (MR) vaccination campaign in the southern Indian state of Karnataka.

The campaign targets around 410 million children across the country, the largest ever immunisation campaign of its kind. The vaccine will be provided for free in schools, health facilities and at outreach session sites. Launched in five states and Union Territories including Karnataka, Tamil Nadu, Puducherry, Lakshadweep and Goa, the campaign will be expanded to other parts of India over the next two years and will be later integrated into India’s Universal Immunization Programme.

The campaign marks the introduction of the rubella vaccine in India’s childhood immunisation programme for the first time. Rubella, which is commonly referred to as German measles is a mild infection, but can have serious consequences if it occurs in pregnant women.