The district has a total tribe’s population of 27,032, including Todas, Paniyas, Kotas, Kattunayakans, Kurumbas and Irulas. Of them, 8,779 are above the age of 45 years while 12,656 people are in the age of 18 to 44 years. Though people above 45 are prioritised, the vaccination drive even covers anyone above 18 years among the tribal population.