Sinusitis is a common complication of viral upper respiratory infection and allergic
inflammation. Although the paranasal sinuses are believed to be sterile under normal …

Acute sinusitis can be classified into categories on the basis of several characteristics,
including the immune status of the patient; infectious or noninfectious nature; occurrence in …

The microbiology of infections of the paranasal sinuses can be anticipated according to the
patient's age, clinical presentation, and immunocompetence. In acute sinus disease, viral …

Sinusitis is one of the most common complaints resulting in physician visits in the United
States. An antecedent viral infection of the upper respiratory tract is the most common …

Acute sinusitis is an infection of the sinuses that lasts for no longer than 12 weeks. It usually
follows a viral infection of the upper respiratory tract–the resulting inflammation impairs …

Sinusitis is an inflammation of the mucosa of the nose and paranasal sinuses due to viral or
bacterial infection with symptoms of cough, headache, nasal drainage, and facial pain …

Acute sinusitis is usually an acute bacterial infection following an unresolved viral upper
respiratory infection. The symptoms are those of a severe head cold: nasal congestion …

The upper respiratory tract, including the nasopharynx, serves as the reservoir for
pathogenic bacteria that can cause respiratory infections including sinusitis (1). During a …