inflammation of maxillary sinuses and close-up view of haemophilus bacteria

maxillary sinus antrum highmore haemophilus influenzae paranasal illustration respiratory anatomy human microbial prevention science nose acute treatment bacterial medical inflammation allergic pain sickness cavity closeup disease anatomical nasal adult healthy health sick infection cold illness medicine bacteria headache chronic microbe macro rhinosinusitis rod shaped multidrug resistant superbug nosocomial hospital acquired