Which organism is most commonly responsible for sialadenitis?

Which organism is most commonly responsible for sialadenitis?

• A. Escherichia coli
• B. Pseudomonas aeruginosa
• C. Staphylococcus aureus
• D. Streptococcus pneumoniae

Answer: (C)

Acute bacterial sialadenitis most often occurs when saliva flow is blocked and the gland becomes inflamed, allowing infection to take hold. Staphylococcus aureus is the leading culprit because it is a common organism on the skin and in the oral cavity that readily invades a duct with stasis, making it the most frequent cause of this gland infection. While other bacteria can appear in salivary infections, they are far less common in this context.

Acute bacterial sialadenitis most often occurs when saliva flow is blocked and the gland becomes inflamed, allowing infection to take hold. Staphylococcus aureus is the leading culprit because it is a common organism on the skin and in the oral cavity that readily invades a duct with stasis, making it the most frequent cause of this gland infection. While other bacteria can appear in salivary infections, they are far less common in this context.