Acute viral nasopharyngitis risk factors

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Ahmed Younes M.B.B.CH [2]

Overview

Common risk factors for having acute viral nasopharyngitis
Contact with flu patients especially if sitting in close proximity to the patient.
Going to daycare centers (for infants and children)
Lower body temperature: there is controversy about the role of lower body temperature in causing viral nasopharyngitis but most of the evidence suggest that it is a risk factor.
Immunosuppressed patients (HIV or haematologic malignancy).

Less common risk factors include
Pregnant women are at increased risk of having common cold for up to 2 weeks after delivery. On the opposite, breastfeeding decreases the risk of having common cold.
Old age > 65 years
Morbid obesity (BMI > 35)