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The histogram shows the number of positive cases of atypical severe community-acquired pneumonia (SCAP) by species and diagnostic technique. The bars are color-coded to represent the different techniques used: light blue for urinary antigen test (UAT) only, orange for polymerase chain reaction (PCR), grey for culture only, and dark blue for PCR and culture. The x-axis shows the different species of atypical bacteria, and the y-axis shows the number of positive cases
