<prompt> 3 months training in preventive and social medicine during internship is recommended byBhore committeeChadah committeeMudaliar committeeMukerji - committee  <response>: Bhore committee 776- Park 20th Major changes in medical education which includes 3 months training in preventive and social medicine to prepare prepare social physicians-recommend by Bhore Committee 1946 Health Survey and Planning Committee popularily known as the Mudaliar committee Chadah Committee - recommended that the vigilance operations is respect of the National malaria Eradication Programme should be the responsibility of the general health services i.e. primary health centres at the block level. 