Recurrent Haemophilus influenzae infection Recurrent conjunctivitis Recurrent Haemophilus influenzae conjunctivitis 2026-06-19T07:25:49Z PMID:2310724 Recurrent or severe Haemophilus influenzae infections are commonly reported in patients with primary antibody deficiencies and may represent an important clue to an underlying defect in humoral immunity. Recurrent episodes of conjunctivitis caused by infection with Haemophilus influenzae, characterised by inflammation of the conjunctiva associated with conjunctival injection and purulent ocular discharge.