Azithromycin is a type of medicine called an antimicrobial, used to fight different infections caused by bacteria. This study wants to check if azithromycin can remove a bacteria called N. meningitidis from the throat and nose. This bacteria can cause a serious illness called meningococcal disease. Usually, azithromycin isn't the first choice to prevent this disease, but some recent research suggests it might be helpful. Participants who are carriers of this bacteria will take a single 500mg dose of azithromycin. The study is for students at Emory University who live in certain housing. Participants should not be university staff, pregnant, breastfeeding, or allergic to azithromycin. They also shouldn't have taken any antibiotics recently or have any sickness when they join the study.

• Duration: One-time dose of azithromycin.
• Participants: Students from Emory University living in specific housing.
• Exclusions: Pregnant individuals, those allergic to azithromycin, or those recently on antibiotics.