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Mycobacterium tuberculosis (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. [1] [2] First discovered in 1882 by Robert Koch, M. tuberculosis has an unusual, waxy coating on its cell surface primarily due to the presence of mycolic acid.
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 ]
The Mycobacterium tuberculosis complex (MTC or MTBC) is a genetically related group of Mycobacterium species that can cause tuberculosis in humans or other animals. It includes: Mycobacterium tuberculosis; Mycobacterium africanum; Mycobacterium orygis [1] Mycobacterium bovis and the Bacillus Calmette–Guérin strain; Mycobacterium microti ...
The risk of developing TB is estimated to be between 20 and 37 times greater in people living with HIV than among those without HIV infection. TB is a leading cause of morbidity and mortality among people living with HIV. [13] In 2009, there were 9.4 million new cases of TB, of which 1.2 (13%) million were among people living with HIV.
So, if a person with TB of the lungs sneezes, coughs, talks, sings, or does anything that forces the bacteria into the air, other people nearby may breathe in TB bacteria. Statistics show that approximately one-third of people exposed to pulmonary TB become infected with the bacteria, but only one in ten of these infected people develops active ...
However, beginning with the first antibiotic treatment for TB in 1943, some strains of the TB bacteria developed resistance to the standard drugs through genetic changes (see mechanisms.) [2] [4] [5] Currently the majority of multidrug-resistant cases of TB are due to one strain of TB bacteria called the Beijing lineage.
Not unlike your bacteria-covered bath mat, your dish drying mat is totally gross.It’s true. Just because your dishes are freshly-washed doesn’t mean bacteria isn’t lurking. “Even after ...
The influenza virus spreads easily in the Northern Hemisphere winter due to climate conditions that favour the infectiousness of the virus. [27] Isolated weather events decrease the concentration of airborne fungal spores; a few days later, number of spores increases exponentially. [36] Socioeconomics has a minor role in airborne disease ...