Rust on Apple trees
Thanks for reaching out to Extension about your question. Yes, it's best to research and purchase disease resistant varieties. from the link below, you will be have to find that information.
Also, at the end of this publication, you will find nursery's were you can mail order:http://www.uky.edu/hort/sites/www.uky.edu.hort/files/documents/HortFact3002_2015.pdf