MCQ IN MEDICINE

Detailed explanation-1: -RSV is the most common cause of respiratory tract illness in children under 2 years of age; it is the major cause of bronchiolitis, pneumonia, croup, bronchitis, and otitis media. The influenza viruses are highly contagious and can cause large epidemics.

Detailed explanation-2: -Acute upper respiratory infections (URI) include the common cold, pharyngitis, epiglottitis, and laryngotracheitis (Fig. 93-1). These infections are usually benign, transitory and self-limited, altho ugh epiglottitis and laryngotracheitis can be serious diseases in children and young infants.

Detailed explanation-3: -Influenza (flu) and the common cold are both types of upper respiratory infections (URIs).