inflammation of maxillary sinuses in a woman and close-up view of bacteria that cause sinusitis

maxillary sinus woman sinusitis female staphylococcus antrum highmore paranasal illustration respiratory anatomy human mrsa microbial science nose acute viral treatment bacterial medical virus inflammation allergic cavity closeup disease anatomical nasal health sick infection cold illness medicine bacteria chronic microbe macro rhinosinusitis pseudomonas klebsiella patient hospital acquired white background isolated