Hello Aspirant,

Stray vacancy round is the final round conducted to fill all vacant seats from round 1,2 and 3. We cannot make any reliable prediction on what will happen during stray vacancy round . There are non specific parameters in this round , any student who has cleared NEET exam may apply . Point to note is until now , fresh registrations were not allowed but as per the latest announcement from MCC , it is . So many students may apply and your possibilities will entirely depend on number of seats vacant in each college, number of candidates applying and their marks . So you can register and try your luck. If you had been allotted a seat in any of the previous rounds , then you are not eligible to attend .Now coming to the second question, there is only one EWS certificate valid throughout India. If your EWS certificate falls under the validity period, then you can very well use it wherever you want to. There is nothing like separate state and central EWS certificates.

https://medicine.careers360.com/articles/neet-counselling

All the best