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+FASTA fields follow:
+
+1. `strain`
+2. `virus`
+3. `accession`
+4. `collection_date`
+5. `region`
+6. `country`
+7. `division`
+8. `location`
+9. `source`
+10. `locus`
+11. `authors`
+12. `url`
+13. `title`
+14. `journal`
+15. `puburl`