's general knowledge of spread route of pulmonary tuberculosis

's general knowledge of spread route of pulmonary tuberculosis
The main infection route of pulmonary tuberculosis is infecting by the respiratory tract through the droplets. Infect the size that the source arranges fungus quantity, the symptom frequentness that the patient coughs, include the density of the tuberculosis fungus with nuclear droplets in the air, it is to influence the important factor infected to keep in touch the close intensity to wait for with infecting the source.
The mankind generally exchange the sense to tuberculosis. The majority do not have illness coming on behind being infected with the tuberculosis fungus, only three kinds of routes happen to about 5- 10% of the the infeted:
First, air - --Respiratory tract route. The tubercle bacillus exists in the tuberculosis focuses of lung and bronchus, or in the space of lung, secretion phlegm liquid of the trachea. When at the patient speaks loudly, cough, sneeze, will release a lot of tiny droplets, a cough of patient may release 3500 droplets, there are more droplets while sneezing hard. Among them the droplets greater in volume sink rapidly, to the ground, others passes little droplets and evaporates in the air quickly, 5-10 droplets of diameter those can until air float midium or long term only, if susceptible person suck such with tubercle bacillus droplets, can be infected. In addition, it is an important infection route too to spit and infect, if pulmonary tuberculosis patient spits the phlegm including tubercle bacillus on the ground, after the phlegm liquid is dry, tubercle bacillus and dust in the phlegm are mixed, fly upward in the air, can be sucked and cause infecting in the lung by healthy people. Air - --The respiratory tract infects the infection way that is main tuberculosis.
Second, the food is infected. May pollute the tubercle bacillus on the tableware which the tuberculosis patient used, uneaten food, and the intersection of tuberculosis and patient share tableware or take the intersection of patient and left food, take dish, eat soup, might spread into tubercle bacillus through diet too in one bowl for instance. Drinking can infect the ox type tubercle bacillus through disinfecting milk or dairy products,etc.. Pour the phlegm pot in order to arrange the fungus patient, is stained with the phlegm liquid on hand because of carelessness, if wash hands half-heartedly, by may be infected too to eat to take the food in handing. Some women like chewing the food to feed babies with the mouth, if she is a person who arranges fungus of a pulmonary tuberculosis, the baby will be probably infected. Generally speaking, the digestive tract has bigger resistance on tubercle bacillus, the tubercle bacillus enters stomach, very easy to be killed by a large amount of gastric acid, unless swallow a large amount of tubercle bacillus, otherwise not easy to infect. Because most of digestive tract tuberculosis are drunk and have not been caused by the milk of boiling.
Third, spread vertically. Infecting the route can well be cut off. The tuberculosis patient should make sure, don't face others while coughing, sneezing or talking and laughing loudlies, and is sealing the mouth with the towel; Different others and head, in case that infect while coughing at night while sleeping; Form the good hygienic habit, No Spitting; Oneself use one the intersection of bowls and chopsticks and spoon separately; Often wash and shine the bed clothes.
Healthy people should notice and infect a issue of tuberculosis patient to relatively isolate, avoid talking with the tuberculosis patient face-to-face at short range, patient's uneaten food of non- edible tuberculosis, should wash hands,etc. with the soap conscientiously after finishing pouring the phlegm pot.
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