3 ms·Because azithromycin is antibiotic, not antiviral.by masonic 7y agoBecause azithromycin is antibiotic, not antiviral.DanBC 7y agoPeople with inflamed lungs caused by viral infection are at increased risk of bacterial pneumonia, so we need to know whether antibiotics are an effective prophylactic measure.gshdg 7y agoThank you, that’s helpful!