Assuming you are asking for next year (2018) so the admission will be done on the basis of NEET only. Also, you will have to get more than 500 to reserve seat there and you will have to apply for NEET first and for CMC Vellore application form for counseling will be seperated which will be relleasing in the month of July (Tentatively). So it is advisable to stay tuned with us on below given website to know all latest updates for upcoming MBBS admission -

http://www.medicine.careers360.com/

Good Luck!!!