MICRO BIOLOGY THE HUMAN EXPERIENCE

Chapter Chapter JOHN W. FOSTER  ZARRINTAJ ALIABADI  JOAN L. SLONCZEWSKI MICRO BIOLOGY THE HUMAN EXPERIENCE Microbes Shape Our History 1 © 2016 W. W. Norton Co., Inc. Half a Lung Is Better than None – 1 Half a Lung Is Better than None – 1 Scenario Debi was an ordinary teenager attending an affluent American public high school when she contracted tuberculosis (TB). She did not know the person who infected her. Infection requires inhalation of the causative bacteria (Respiratory Route). 2 © 2016 W. W. Norton Co., Inc. Half a Lung Is Better than None – 2 Half a Lung Is Better than None – 2 Signs and Symptoms Debi coughed all the time, felt tired, and was losing weight. Her coughing brought up blood. An X-ray revealed the signs of infection in her lung, including a large hole eaten away by the bacteria.