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Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, [7] is a contagious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs , but it can also affect other parts of the body. [ 1 ]
A human pathogen is a pathogen (microbe or microorganism such as a virus, bacterium, prion, or fungus) that causes disease in humans.. The human physiological defense against common pathogens (such as Pneumocystis) is mainly the responsibility of the immune system with help by some of the body's normal microbiota.
M. tuberculosis can also grow on the lipid cholesterol as a sole source of carbon, and genes involved in the cholesterol use pathway(s) have been validated as important during various stages of the infection lifecycle of M. tuberculosis, especially during the chronic phase of infection when other nutrients are likely not available. [47]
Here's what we know about the tuberculosis outbreak in Kansas right now, plus how the infection spreads. Meet the expert : Thomas Russo, MD, is a professor and chief of infectious disease at the ...
In the U.S., physicians talk about latent tuberculosis treatment because the medication does not actually prevent infection: the person is already infected and the medication is intended to prevent existing silent infection from becoming active disease. There are no convincing reasons to prefer one term over the other.
Although tuberculosis can be a relatively early manifestation of HIV infection, the risk of tuberculosis progresses as the CD4 cell count decreases along with the progression of HIV infection. [3] The risk of TB generally remains high in HIV-infected patients, remaining above the background risk of the general population even with effective ...
Low body weight is associated with risk of tuberculosis. A body mass index (BMI) below 18.5 increases the risk by 2 to 3 times. An increase in body weight lowers the risk. [14] People with diabetes mellitus are at increased risk of contracting tuberculosis, [15] and they have a poorer response to treatment, possibly due to poorer drug ...
An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection. Infections can be caused by a wide range of pathogens, most prominently bacteria and viruses. [2] Hosts can fight infections using their immune systems.