Common TB myths busted

Myth: I will definitely get TB if I am exposed to someone with the disease.

Fact TB, which is transmitted through the air, does not spread through casual contact such as shaking hands and sharing food. It is less contagious than a viral infection such as a cold or the flu. However the risk of infection is higher when there is prolonged close contact in an enclosed space with an infectious person. Not everyone who is exposed will be infected as the body’s immune system, in most cases, is able to defend itself against the germ.

Myth: I do not have TB if I do not have symptoms.

Fact Nine in 10 adults who are infected with the TB bacteria and whose immunity are not compromised will remain well throughout their lifetime. This is known as “latent TB infection”, whereby the body’s immune system is able to hold the bacteria in a state of containment - this person does not have symptoms and is not infectious. One in 10 people with latent TB infection will develop active TB, with symptoms such as prolonged cough, fever, weight loss and fatigue. However, some patients with active TB have no symptoms. A person with active TB who coughs out the germs into the air is infectious to others.

Myth: A person with active TB remains infectious throughout his treatment, and must be hospitalised.

Fact A person is considered non-infectious after two weeks of treatment. The majority of people with TB do not require hospitalisation. They can continue treatment while continuing with their daily routine.

Source: TTSH TB Control Unit