HLA-DR2 binds the flu virus

HLA-DR2 and the flu H1N1
https://www.ncbi.nlm.nih.gov/pubmed/1713610
https://www.ncbi.nlm.nih.gov/pubmed/2422266
https://www.ncbi.nlm.nih.gov/pubmed/2933850

Narcolepsy, flu, and HLA-DR2
https://www.ncbi.nlm.nih.gov/pubmed/24825774