Covid-19 is threatening the health of humans all over the world. To respond to Covid-19’s attacks, humans need to understand the enemy. How does this virus affect the operation of the human body? Let us maintain a sense of crisis and overcome difficulties.

Geneva, Switzerland (Merxwire) – World Health Organisation (WHO) Situation Report that most people infected with Covid-19 will only have mild cold symptoms, and 80% of infections are mild or asymptomatic, 15% are severe infection,
requiring oxygen and 5% are critical infections, requiring ventilation. How does Covid-19 attack the human body? What impact will it have on our health?
Covid-19 infection symptoms
Covid-19 is a changeable virus. Some patients have no obvious symptoms, those with mild symptoms can still spread the virus, but they may not realize that they have been infected, which makes it difficult to stop the virus from spreading.
In patients with symptoms, infection in the upper respiratory tract is also characteristic, but there are other symptoms. Common symptoms include:
1. Fever
2. Cough
3. Headache
4. Conjunctivitis
5. Loss of taste
Because most of the above symptoms are similar to influenza virus, it is not easy for patients to find that they have been infected with Covid-19. It is necessary to trace the history of traveling abroad and the most recent life contacts, and to be confirmed through detailed inspection.
Severe pneumonia caused by Covid-19
Almost all serious consequences of Covid-19 feature pneumonia. Under the action of the virus, the lungs will be filled with inflammatory material, and the air channels between the lungs and the outside cannot effectively exchange gas, leading to difficulty breathing and physical failure.
At present, do n’t have anything that can stop people getting Covid-19 pneumonia, and there is no mature treatment available to patients, only supportive treatment can be given by maintaining high oxygen levels.
The WHO believes that the elderly and people with underlying problems such as high blood pressure, heart and lung diseases or diabetes are more likely to cause serious consequences due to Covid-19. In the world, most patients who died because of Covid-19 are Indeed over 70 years old, obese people also increased the mortality rate after being infected with the virus.
How does the Covid-19 pneumonia develop?
Research shows that Covid-19 will attack the human immune system like HIV. This study has obtained preliminary verification from the 20 Covid-19 deceased, and their immune systems have been almost completely destroyed.
In addition, the pneumonia caused by Covid-19 may still leave sequelae after the patient recovers, such as Pulmonary Fibrosis. This shows that it a very terrible virus that will have a lasting impact on human life. No matter how healthy and active you are, the risk of severe pneumonia will increase with age. This is because our immune system weakens with age, making it more difficult for our bodies to fight infections and diseases.
Experts from all over the world have begun to study vaccines, but it takes time to check and test. Therefore, before completing the research on treatment methods and vaccines, the elderly and chronic diseases need to pay special attention to the contacts in life to avoid being infected by the virus.