Studies on Influenza in the Pandemic of 1957-1958. Ii. Pulmonary Complications of Influenza*†

ASCVD, arteriosclerotic heart disease; CO, coronary occlusion; AS, aortic stenosis; Al, aortic insufficiency. Where pulmonary symptoms blended with initial influenza symptoms the interval has been listed as <1. Cough, chest pain, dyspnea and cyanosis are graded in severity from 0 to + + +. RLL. right lower