Pathogenesis Pathology II Hemorrhagic and necrotic lesions may develop in all organS, meningitis, pneumonia, and serosanguineous pleuropericarditis are prominent features Primary pneumonic plague results from inhalation of infective droplets(usually from a coughing patient), with hemorrhagic consolidation sepsis and deathPathogenesis & Pathology II • Hemorrhagic and necrotic lesions may develop in all organs; meningitis, pneumonia, and serosanguineous pleuropericarditis are prominent features. • Primary pneumonic plague results from inhalation of infective droplets (usually from a coughing patient), with hemorrhagic consolidation, sepsis, and death