Which of the following diseases is caused by bacteria?

Tuberculosis is caused by bacteria. Specifically, it is caused by the bacterium Mycobacterium tuberculosis. This disease primarily affects the lungs but can also impact other parts of the body. Symptoms of tuberculosis include a persistent cough, chest pain, fever, and night sweats. The disease is transmitted through the air when an infected person coughs or sneezes. Early diagnosis and appropriate antibiotic treatment are crucial for managing tuberculosis and preventing its spread. Jaundice is a symptom rather than a disease and can result from various underlying conditions, including liver disease. Smallpox is caused by the variola virus, and mumps is caused by the mumps virus. Both of these viral diseases have largely been controlled through vaccination programs. Therefore, of the options provided, only tuberculosis is caused by bacteria.