Whether novel coronavirus has a long-term impact on health and permanent harm to the body is also a concern of many people. Scientists are also studying this problem further. Some infections in COVID-19 are symptomatic and some are asymptomatic. Although the virus is highly contagious and fast, most people can recover through active treatment.
The most common symptoms in novel coronavirus are obvious lung pain, dry cough and fever. If it is only a mild symptom, it will not affect health. If novel coronavirus's symptoms are obvious, moderate or severe, the patient will have dyspnea and pneumonia. Generally speaking, this condition may leave permanent lung damage. After novel coronavirus is infected, it will first enter the human body through the respiratory tract. Its symptoms are similar to some pneumonia at ordinary times. Novel coronavirus has the greatest influence on the lungs. When the virus keeps replicating, the immune response will be excited and the lungs will be seriously damaged.
When infected with novel coronavirus, asymptomatic people have less influence than symptomatic people, because asymptomatic people have less CD4+T lymphocyte loss, which indicates that this infection has relatively little damage to the immune system. The proportion of liver injury in asymptomatic patients is lower than that in symptomatic patients, and the recovery of lung function by ct scanning is faster.
Since the outbreak of novel coronavirus, in order to control the spread of the virus, masks have become our protective equipment and an important measure to prevent infection. However, according to the survey, even seemingly healthy people may find evidence of anti-infection history in their bodies in the later blood and ct screening.
Even asymptomatic infected people who have taken protective measures and suffered minor injuries may not realize that they are carrying a new virus. Because infected people have no other symptoms, no isolation or treatment measures, their symptoms are ignored by medical staff, and they often unconsciously spread the disease to others.
Asymptomatic people in novel coronavirus are contagious and may spread through other channels. Therefore, asymptomatic infected people should also be tested, tracked, isolated and treated. In order to prevent novel coronavirus, we must not relax, strengthen self-protection, try not to go to crowded places, wear masks, wash our hands frequently, pay attention to ventilation and take protective measures.