In winter, doctors have identified three symptoms of coronavirus – fever, cough and shortness of breath. Over time, the list of symptoms increased. Some patients lost the sense of smell and taste. Someone was vomiting, or diarrhea. Someone has an arrhythmia or a heart attack. Someone had damaged the kidneys or liver, headaches, blood clots, rashes, swelling and strokes. Many did not have any symptoms.

Now scientists have come to not only identify the symptoms COVID-19, but to get to its root causes.

“within a few hours thousands of new viral cell is ready to infect more cells. Although SARS-CoV-2 less deadly, than the original SARS virus, which appeared in 2002, it multiplies faster. In addition, unlike SARS, which mainly affects the lungs, SARS-CoV-2 propagated throughout the system of the respiratory tract, including nose and throat, making it very contagious as the common cold”, – stated in the material published in the journal MedicalXpress.

According to max Krummel, Professor of experimental pathology, University of California, virus strange that with all the characteristics of a virus-destroyer, a lot of cells attacked by them, not die. That is, the virus harms the body, but as a pest they are treated.

And another problem on the way of victory over the virus can become their own human immunity. Krummel and colleagues observed 30 patients with coronavirus and found that the immune response to the virus can be so strong that the body receives a severe form of pneumonia.

“the Immune system reacts more aggressively against SARS-CoV-2 than against influenza viruses. Based on these data, the lungs of the patients destroyed not by one virus, and detritus (a breakdown product of tissue) during unsuccessful immunological battle. This strange immune response may explain why about 11-th day of infection COVID-19 patients frequently develop severe pneumonia known as acute respiratory distress syndrome or respiratory diseases,” explained Krummel.

The scientists explained that excessive or improper interference in the process of immune suppression of the virus creates the risk that could undermine the human immune system to such an extent that she will not be able to cope with infection. Need to find a balance to adjust their own reaction of the organism and aid the vaccine.

Earlier it became known that the vaccine against coronavirus test the elderly and people with chronic diseases. They must be included in the second phase of clinical trials.