Question special
Lead Moderator

The results of this study seem to have different rates of certain pathogens being detected than prior studies (lower levels of pneumococcal disease and atypicals then in the Marston study and lower gram negatives than prior studies). Does this reflect a shift in the pathogens causing CAP in adults, reflect differences in sampling to establish microbiological diagnosis, or reflect the prevalence of pathogens in certain geographic areas or institutions?