Epidemiology
The incidence of community-acquired acute bacterial sialadenitis is unknown. Although the majority of patients are older people, this condition may also affect young children and, rarely, neonates; particularly those born premature.[9][10][11][12] Chronic recurrent sialadenitis occurs 10 times more frequently in adults than in children, with an age range of 40 to 60 years in adults and 4 months to 15 years in children.[13] The incidence and prevalence of chronic sclerosing sialadenitis is unknown but appears to be much lower than acute or chronic recurrent sialadenitis. The prevalence of Sjogren syndrome in the US has been estimated to be from 0.4 million to 3.1 million adults, with a peak age between 50 and 60 years and a high predilection for women (ratio 9:1).[14] Most of these patients will present with an associated autoimmune sialadenitis.[15][16]
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