Karan Kanwar 3 starts crying whenever his mother puts him on the ground hoping one day her son will take baby steps like other children. An extremely weak Karan cannot walk until he is propped up. Karan's poor physical state is shared by most children his age in Aagar - a village in Rajasthan's Alwar district - where almost none of them has been vaccinated against major diseases like diphtheria pertussis tetanus tuberculosis and measles. Ask his mother Sunita when was the last time her son was inoculated and she says: 'When I was pregnant' believing he was inoculated when