what causes infection in salivary gland
A salivary gland infection occurs when a bacterial or viral infection affects the salivary gland or duct. The infection can result from reduced saliva flow or the blockage or inflammation of a salivary duct. The condition is called sialadenitis. Your mouth is almost constantly flushed with saliva.his is often caused by the blockage or inflammation of the salivary gland duct. Viruses and other medical conditions can also reduce saliva production, including: 1  mumps (a contagious viral infection that is most common among children who have not been immunized). 2  HIV.