Q.The study suggests that A)a relation between child immunity and percentage of OTITIS MEDIA. B)More than 40%of OM is caused by URTI C) a definitive role of RSV in OM OTITIS MEDIA Otitis media (OM) remains a major health problem for children throughout the world. In addition to the short-term morbidity and costs of the illness, children with persistent middle ear effusion may be at risk for long-term detrimental effects on speech and language. The annual cost of the medical and surgical treatment of OM in the United States alone is estimated at between $3 and $4 billion dollars. The pathogenesis of the disease is multifactorial. Infection by bacteria and viruses, abnormal function of the Eustachian tube, and relative immaturity of a child's immune system are all known to be important in the development of acute otitis media (AOM) in young children. Upper respiratory tract infections (URTIs) with a number of viruses have long been associated with the development of OM. Early studi...