\s=b\Alternating cases of upper respiratory infection (URI) occurring within two months of an episode of otitis media were treated with either sulfonamides or decongestants. One hundred three cases of uncomplicated URI were treated with sulfonamide and 98 with decongestant. When adjusted for possible recrudescence rather than recurrence the rate was 4/71 (5.6%) and 15/76 (20%) in the treated and control groups, respectively. This difference is significant (P < .001) and suggests that intermittent prophylactic treatment can modify the recurrence rate of otitis media in children.(Am J Dis Child 132: [681][682][683] 1978) In childhood, acute otitis media is a common and frequently recurring illness that may endanger hearing. In the patient who has recently recov¬ ered from an episode of otitis media a new upper respiratory infection (URI) often results in recurrent otitis.With the advent of the chemotherapeutic agents and antibiotics, hope of effective prophylaxis of the bacterial complications of viral illnesses flared, sputtered, and died. Multiple studies1-1 From the Reprint requests to 245 Fourth St Bldg, Bremerton, WA 98310 (Dr Biedel). confirmed that complications follow¬ ing viral respiratory disease were not prevented and antibiotic toxicity and superinfection with resistant bacteria were constant dangers. However, pro¬ phylactic measures directed against certain bacteria are successful. Two examples are the control of recurrent streptococcal infections in patients with acute rheumatic fever and con¬ trol of gonococcal ophthalmia. Long-term prophylactic therapy in recurrent or chronic urinary tract infection also has become a recom¬ mended pattern of treatment.' Since the pathogenesis of recurrent otitis media is believed to be related to defects in Eustachian tube function3 involving either obstruction of venti¬ lation and drainage or excessive reflux of nasopharyngeal contents, the parallel with urinary tract disease is apparent. In addition, the common bacteria of otitis media (Pneumococcus, Haemophilus influenzae, Streptococcus:'K) are relatively susceptible to antibiotic measures.In Alaska, Ensign et alv treated Eskimo children with sulfamethoxypyridazine for a period of nine months, with a 56% reduction in the incidence of draining ears. Maynard et al" conducted a double-blind study using continuous ampicillin prophy¬ laxis for a period of one year in Eski¬ mo children, with an overall 47% reduction in episodes of otorrhea and a 67% reduction where medication compliance was good. Perrin et al" used sulfisoxazole over a period of six winter months in a double-blind study of 54 children who previously had experienced an increased incidence of otitis media. There were four cases of otitis in the treatment period com¬ pared to 21 in the control period, a reduction of 81%.Many pediatricians have attempted to modify the recurrences of otitis with their own empiric routines. This study is a test of one such program in a primary care pediatrie practice. Using a low-cost sulfonamide rather than a broad-sp...