All of the students were required to get a ( ) against tuberculosis, a serious disease. 2. Health officials held a ( ) meeting of thousands of doctors to discuss the problem. 3. Many sick people arrived on the plane. The health officials decided to ( ) all of them in a hospital to keep the disease from spreading. 4. Smoking cigarettes will increase your ( ) of getting lung cancer. 5. The scientists tried to ( ) the disease back to its original source. 6. Health is not just a local issue. It is a global issue and requires international ( ) . 7. It has taken us over a ( ) of hard work to stop the disease from spreading. 8. In the elementary school, there was an ( ) of the flu. About 30 percent of the kids got sick. 9. Researchers are trying to develop a good ( ) to keep people healthy in large groups. 10. The doctors knew that they had to immediately to ( ) pr the disease from spreading.