What does haemophilus influenzae on a nasal swab mean? does it mean bacterial infection?

Nasal Swab: The three most common bacterial pathogens causing upper respiratory infection in adults are Moraxella catarrhalis, Streptococcus pneumoniae, and Haemophilus influenzae. A nasal swab is performed to culture and see what pathogen is causing problems. Haemophilus is a normal colonizer, but when isolated from sputum during infection it can indicate colonization has morphed to pathogenicity.

Depends: It is a common upper airway germ. When found, you must put everything in context of why you looked. If I randomly tested hundreds of nasal swabs I would expect to find it on many asymptomatic people.If I sucked it out of a draining sinus infection it might be the germ that overgrew and caused the infection.