Tests for the presence of COVID-19 and antibody may not show the real situation and it is a mistake to give negative results at all stages of infection with coronavirus new. This opinion was expressed by doctor of biological Sciences, Professor, School of systems biology, GMU (USA) Ancha Baranova.
According to her, the first stage is accompanied by asymptomatic disease, however, at this time the virus has already propagated.
“About 40% of people get the virus from asymptomatic carriers. After the first stage is the stage where symptoms are noticeable. However, a number of people the disease does not go beyond the first stage”, – quotes RIA Novosti news Agency the words of the expert.
At the first stage of the fight against infection in the body happens with the help of interferon, a natural protective system that is able to defeat the virus rather than antibodies. In this regard, the test for antibodies in the infected may not be positive.
with a fever and cough and possibly shortness of breath appear in the second stage. Then you should begin treatment with antiviral medications, prescribed therapy a new type of coronavirus. Also, the body includes additional protection. Approximately in the middle of the second stage, he begins to develop antibodies.
“People can also stay in the second stage, and the disease does not go into a more acute form. At this stage the virus can be defeated by antibodies. In the worst case the disease is not complete, because the inflammation is still in progress, pneumonia is, but at the expense of other factors. This situation can lead to the fact that the test for the virus will give a negative result. The next stage, it is even more difficult. Again, at this stage, the virus can be in person, and may no longer be”, – said the expert.
