Infect > Bacterial > H influenza

Haemophilus influenza:

Clinical:

H influenza is responsible for about 5-20% of community acquired pneumonias and is also an important cause of nosocomial infection [1].

X-ray:

CXR demonstrates patchy or segmental areas of consolidation [1]. Less commonly areas of non-segmental consolidation can be seen [1]. A reticular or reticulonodular interstitial pattern, by itself or in combination with air-space consolidation occurs in 15-30% of cases [1]. Cavitation occurs in 15% or less of cases [1]. Pleural effusion can be seen in up to 50% of cases, but empyema is uncommon [1].

REFERENCES:

(1) Radiol Clin N Am 2005; Tarver RD, et al. Radiology of community-acquired pneumonia. 43: 497-512

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