I am working on influenza virus. I would like to annotate variants from virus using annovar. I am facing issue in building the database for virus. I have just 8 genes for the influenza virus and have their refseq id. I tried finding the genome id but I couldn't . So I saved all the 8 gene's fasta sequence in one file and used it for building the database for annovar. The annovar program throws an error saying that I don't have refGene.txt file.
Can I create custom GTF file for influenza virus based on these 8 genes?
Have anyone faced similar issue?
Can you suggest any other variant annotation tool apart from annovar?