Antibiotic Sinusitis Toddler Toddler Sinusitis Antibiotic Little one Sinusitis Antibiotic MatthewhtyuiAlarcon Monday, June 5, 2017 Sinusitis (ages 3 and 4) babycenter. Sinusitis (ages 3 and 4) he may have a sinus infection, or sinusitis antibiotics will be prescribed, pr...