India's vaccine deficit: why more than half of Indian children are not fully immunized, and what can--and should--be done.

Although India is a leading producer and exporter of vaccines, the country is home to one-third of the world's unimmunized children. Fewer than 44 percent of India's young children receive the full schedule of immunizations. India's vaccine deficit has several causes: little investment by the government; a focus on polio eradication at the expense of other immunizations; and low demand as a consequence of a poorly educated population and the presence of anti-vaccine advocates. In this article we describe India's vaccine deficit and recommend that the government move quickly to increase spending on, and otherwise strengthen, national immunization programs.