What are the prevalence and epidemiology of bacteria found in the nose?

The nasal cavity is home to a diverse microbiome, predominantly consisting of Staphylococcus aureus, Staphylococcus epidermidis, and various species of Corynebacterium and Propionibacterium. Approximately 30% of individuals are persistent carriers of Staphylococcus aureus, while others may intermittently carry it. The composition of nasal bacteria can vary based on factors such as age, health status, and environmental exposures. Disruptions in this microbiome may contribute to respiratory infections and other health issues.