Is infectious parotitis contagious?

Mumps is an infectious disease caused by the mumps virus infecting the parotid glands. However, individuals—whether adults or children—who have already been infected with the mumps virus are not contagious, as they have developed antibodies against the virus. So, is infectious mumps contagious?

Is infectious mumps contagious?

Yes, infectious mumps is contagious. The parotid gland is the most commonly inflamed salivary gland, and viral infection—particularly by the mumps virus—is the most common cause of parotitis. Obstruction of the main parotid duct or its branches is typically the primary cause of acute parotitis. Secondary bacterial infection may further develop, leading clinically to complications such as meningoencephalitis, orchitis, and pancreatitis. Acute suppurative parotitis, in contrast, is a bacterial infection.

Painless, non-infectious facial swelling can also represent parotitis, which may be either acute or chronic. Mumps is a highly prevalent and highly contagious infectious disease, especially during winter and spring when viral transmission accelerates. It spreads via multiple routes, including respiratory droplets, contaminated objects, and transplacentally.

In daily life, maintain regular dietary habits: avoid spicy and irritating foods, refrain from overeating or binge eating, and avoid staying up late. We hope this information is helpful to you.