Does tuberculosis get inherited?

Written by Wang Xiang Yu

Pulmonology

Updated on September 13, 2024

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Is tuberculosis hereditary? Tuberculosis is not a hereditary disease; it is an infectious disease. Infectious diseases and hereditary diseases are two completely different concepts. Tuberculosis is generally infectious, which means that in a family, if parents are infected, they can easily transmit the tuberculosis bacteria to their children or others around them. Therefore, many people might mistakenly believe that tuberculosis is hereditary. However, this is not the case; tuberculosis is transmitted through the tuberculosis bacteria.

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Written by Wang Xiang Yu

Pulmonology

1min 14sec

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Is tuberculosis easily contagious?

Whether tuberculosis (TB) is easily transmitted primarily depends on the source of infection, which refers to the TB patients and the amount of Mycobacterium tuberculosis in their sputum. If TB bacilli can be detected in their sputum, and the quantity is substantial, then their infectiousness is indeed higher. However, if the TB patient has undergone treatment, or if there are only a few TB bacilli in their sputum, or none at all, then their infectiousness may not be as significant. The second factor is the mode of transmission, which mainly occurs through the respiratory tract. If TB patients can be isolated timely, or if they wear masks, and their sputum is properly managed, for example by wrapping the sputum in paper and burning it, then they are less likely to transmit the disease to others. TB generally involves susceptibility issues; even if someone has been vaccinated with BCG or the TB vaccine, they can still be reinfected. Therefore, controlling these three transmission pathways is essential to minimize the risk of contracting TB.

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Written by Wang Xiang Yu

Pulmonology

1min 8sec

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Local symptoms of pulmonary tuberculosis

The local symptoms of tuberculosis primarily require us to understand where tuberculosis occurs. Currently, tuberculosis in the lung tissues, trachea, bronchi, and pleura are all classified as pulmonary tuberculosis. The primary local symptoms are still respiratory symptoms, with the most common being cough and expectoration. Patients with tuberculosis generally have a slow onset, with most experiencing cough and expectoration that can persist for two weeks or more. Some patients may also exhibit symptoms like blood in the sputum or hemoptysis. Additionally, some patients may experience other symptoms; for example, those with pleural involvement might have irritative cough, chest pain, and difficulty breathing, while those with tracheobronchial involvement might exhibit a prolonged irritative cough. Some patients may also develop bronchial stenosis, which can lead to difficulty breathing.

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Written by Ye Xi Yong

Infectious Diseases

50sec

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Is tuberculosis contagious?

Firstly, pulmonary tuberculosis is contagious, but it also depends on the type. Generally, pulmonary tuberculosis is most contagious during its active phase, but some patients with fibrosis and in a stable phase are not contagious. The transmission of pulmonary tuberculosis is mainly through droplets, spread by talking, sneezing, or spitting from a tuberculosis patient to a healthy person. However, this droplet transmission has a distance requirement. We believe that a distance of more than 1 meter is relatively safe, and 2 meters is absolutely safe. To prevent the transmission of tuberculosis, it is essential to maintain a distance from tuberculosis patients, wear masks, and ensure frequent ventilation by opening windows.

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Written by Wang Xiang Yu

Pulmonology

38sec

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Does tuberculosis cause fever?

Does tuberculosis cause fever? The answer is definitely yes. Fever is one of the most common clinical manifestations of tuberculosis. Many tuberculosis patients experience low fevers, and a minority of patients, such as those with caseous tuberculosis or tuberculous pleurisy, may experience high fevers that can recur and persist. Moreover, tuberculosis patients may sometimes also have concurrent bacterial infections, which can cause the fever to last longer and be more difficult to control.

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Written by Wang Xiang Yu

Pulmonology

57sec

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Can you get tuberculosis on your own?

This question can be interpreted in two ways. First, whether every individual could potentially contract tuberculosis (TB) – to that, the answer is yes. Tuberculosis is a contagious disease, and we are all susceptible to the TB bacterium. Therefore, there is a chance, in our lifetimes, to be infected by the TB bacterium and consequently develop TB. The second interpretation revolves around whether a person could suddenly develop TB without specific reasons. Generally, this does not happen. In other words, a typical person would not contract TB unless they have been exposed to the TB bacterium. This means one does not contract TB arbitrarily; it occurs only after coming into contact with TB patients or the TB bacterium, leading to an infection in the lungs and resulting in TB.