Common respiratory diseases on college campuses are upper respiratory tract infections, acute tracheobronchitis, and bacterial pneumonia.
Upper respiratory tract infection:
Upper respiratory tract infection is referred to as epiglottitis, which is a general term for acute inflammation of the nasal cavity, pharynx or larynx. Common pathogens are viruses, only a few caused by bacteria. This disease does not distinguish between age, sex, occupation and region, certain kinds of disease is infectious, sometimes can cause serious complications.
Positive nucleic acid test to determine the infection of the new crown omicron virus, there may be upper respiratory tract infection, the new crown upper respiratory tract infection usually starts sharply, the incubation period ranging from 1 to 3 days, the main symptoms for the main manifestations of the nasal symptoms, such as sneezing, nasal congestion, runny watery nasal discharge, but also may be manifested as cough, dry throat, throat itching or burning sensation, and even postnasal drip sensation.
Generally, the nasal mucus becomes thicker after 2 to 3 days, often accompanied by sore throat, dyspnea, and olfactory impairment. Severe patients tend to develop respiratory distress a week after the onset of the disease, and severe cases can progress rapidly to acute respiratory distress syndrome.
Acute tracheobronchitis:
Acute tracheobronchitis is an acute inflammation of the mucous membrane of the bronchial tree caused by biologic or abiotic causative factors, and is an independent condition that is not intrinsically related to chronic bronchitis.
This disease is a common and frequent disease, especially in children and the elderly. Most of the upper respiratory tract viral infections caused by cold as the main reason, fall and winter for the disease season, cold areas are also common, in the influenza epidemic, the incidence of this disease is higher. In addition, often in contact with physical and chemical irritants, people are prone to this disease.
Bacterial pneumonia:
Pneumonia is an inflammation of the terminal airways, alveoli, and interstitium of the lungs that can be caused by pathogenic microorganisms, physical and chemical factors, immune damage, allergies, and drugs.
Normally, the respiratory tract has an airway defense barrier, a structural and functional barrier composed of a mucus layer, epithelial cells, and a variety of immune cells **** with the same composition, which leads to infection by pathogens when the structure or function of the airway defense barrier is disrupted.
Pathogens can start pneumonia by air inhalation, blood-borne dissemination, spread of neighboring infected sites, and misattraction of colonizing bacteria in the upper respiratory tract. After infection, the pathogen can cause alveolar capillary congestion, edema, intra-alveolar fibrin exudation and cellular infiltration. Pneumonia is cured without scarring, and the structure and function of the lungs can generally be restored.