Mark was worried about his grandma who was coughing all night and had a high fever. When he got home from school, there was an ambulance at his house taking his grandma to the hospital. His dad told him that grandma was very sick with coughing up blood and a high fever. The next day at the hospital, they learned she had tuberculosis and had to be isolated. Mark was relieved when his dad said she would be okay after taking medicine for 6 months.