Tuberculosis is an infectious disease caused by tuberculosis mycobacteria and characterized by the development of a specific tuberculosis inflammation accompanied by the formation of multiple tuberculosis bumps in the affected organs with a tendency to disintegrate tissue.
Respiratory organs are most often affected, although there is also TB of other organs and systems (nervous, digestive, lymphatic, genitourinary; brain, bones and joints, skin, eyes and other organs), says Dr. Denis Slinkin.
The causative agent of tuberculosis is a bacillus bacteria with the size of 1 to 10 microns, which is very resistant in the external environment:
It can stay suspended in the air environment for an average of 6 hours to several days.in a settled state in street dust – up to 10 days;in books – up to 3 months;in a dark, cool place – years;dies under the influence of UFO within 3-5 minutes, when boiling – within 45 minutes.
Dr. Denis Slinkin states: The main source of infection are coughing patients with pulmonary form of tuberculosis, secreting with sputum the causative agent.
Patients with tuberculosis of other organs and systems producing the causative agent with urine, faeces, pus, fistula content are also dangerous. Sick animals that produce the causative agent, e.g. with milk, may also be a source.
Infection is mainly transmitted by airborne droplets, airborne dust, less often by contact and food (when eating food from sick animals).
Thus, when coughing, sneezing or talking, patients release tuberculosis bacteria into the air, which remain suspended in the air for a long time as an aerosol. To infect a person, it is enough to inhale between 1 and 10 sticks, so says Dr. Denis Slinkin.