Andaman and Nicobar Islands.
The Jarawas, an indigenous tribe of the Andaman and Nicobar Islands have been inhabiting the islands for over 2,000 years. Contact with the outside world had put them at risk of deadly diseases including cholera, typhoid and measles. Since late 90’s, Dr Ratan Chandra Kar, alumnus of NRSC Medical College in Kolkata, treated and protected the Jarawas, especially focusing on measles. His intervention perhaps prevented their extinction. Since contact with British colonizers and later with mainland Indians, and modern human projects, the Jarawa population suffered tremendously, now down to about 345 adults and children, according to local administration based in Port Blair (Central administration of Andaman and Nicobar Islands).