Barriers to the effective management of respiratory tract infections in the community
Abstract
The treatment of respiratory tract infections (RTIs) continues to challenge the knowledgeable and conscientious physician. Upper RTIs such as sinusitis and tonsillitis/pharyngitis - while not generally life-threatening - are associated with personal cost and suffering, while infections of the lower respiratory tract, including community-acquired pneumonia (CAP) and acute exacerbations of chronic bronchitis (AECB), represent a more serious clinical challenge and account for almost half of all community-acquired infections. Moreover, such infections may be fatal. Laboratory tests for etiologic agents of RTIs are often insensitive and slow and identify the causative pathogen in only a minority of cases. Therapy for RTIs is, therefore, generally presumptive and instituted before there is a clear understanding of etiology. Such an approach requires antibacterials that possess a spectrum of activity which covers both the common and atypical/intracellular pathogens associated with RTIs to enable physicians to confidently prescribe treatment. A major barrier to the confident prescribing of empiric therapies for RTIs is the increasing prevalence of resistance to existing antibacterial agents among respiratory tract pathogens. Increasing levels of antibacterial resistance now threaten the utility of existing agents, primarily the beta-lactams and macrolides, and continue to drive the search for newer agents which retain activity against drug-resistant respiratory tract pathogens. This…
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