According to the titre in cELISA, 52 hares were conclusive for an overcome EBHSV infection (78.8%, RT value > 4), including 15 animals being certainly infected within a few months (EBHSV titres ≥ 640), as well as one naïve hare (IgM anti-EBHSV ≥ 1280–2560) infected within a few weeks before sampling (EBHSV titres ≥ 2560). Here, CD40LG is linked to infection.