{Reference Type}: Case Reports {Title}: A Case of Vascular Graft Infection Caused by Haemophilus parainfluenzae. {Author}: Okuhama A;Murai Y;Ishikane M;Mezaki K;Isaka E;Matsushiro T;Yamada G;Nomoto H;Yamamoto K;Morioka S;Ohmagari N;Horai T; {Journal}: Open Forum Infect Dis {Volume}: 9 {Issue}: 7 {Year}: Jul 2022 {Factor}: 4.423 {DOI}: 10.1093/ofid/ofac187 {Abstract}: Haemophilus parainfluenzae is a gram-negative coccobacillus that is a part of the normal flora in the human upper airway and sometimes causes infective endocarditis. We present a case of a 68-year-old Japanese man who had vascular graft infection caused by H. parainfluenzae 4 years after surgery for chronic aortic dissection.