Uncomplicated acute frontal sinusitis (AFS) is most often associated with an antecedent viral upper respiratory tract infection. Bacterial infection is suspected if symptoms are persistent for at least 10 days.
CITATION STYLE
Soudry, E., & Hwang, P. H. (2016). Acute frontal sinusitis. In The Frontal Sinus, Second Edition (pp. 63–76). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-662-48523-1_6
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