Final answer:
An untreated person with active TB can infect approximately 10-15 people a year through close contact. Tuberculosis is spread through the air when someone with the disease coughs, sneezes, or spits. Treatment and precautions can help prevent the spread of TB.
Step-by-step explanation:
An untreated person with active TB can infect approximately 10-15 people a year through close contact.
Tuberculosis (TB) is spread through the air when someone with the disease coughs, sneezes, or spits. The TB bacteria are contained in droplets that are then inhaled by others, leading to infection.
To prevent the spread of TB, it is important for infected individuals to receive treatment and take precautions such as covering their mouth and nose when coughing or sneezing.