Scientists have found that the amount of antibody recovered COVID-19 decreases with time

Research conducted by the doctors of the hospital Schwabing in Munich, Germany showed that the number of antibodies that appear in the human body after suffering COVID-19, which decreases with time. According to researchers, this fact may cast doubt on the long-term effectiveness of possible vaccination. On 12 July said channel ZDF , citing the chief doctor of the clinic of infectious Klemens Bendtner.

According to him, the blood of the first patients with the coronavirus, who was treated at the clinic in January, showed a clear decrease in the number of antibodies. The results of such tests showed four of the nine patients.

Bendtner believes that the results of these studies point to the possibility of re-infection.

Chinese researchers also previously found that the number of antibodies in two months has sharply decreased in patients with asymptomatic, but these figures were fixed and others had been ill, announced the publication of Nature Medicine.

British scientists came to a similar conclusion, according to the publication The Guardian. Scientists from king’s College London analyzed the immune response more than 90 patients, and concluded that the maximum number of antibodies appears in the body three weeks after detection of symptoms. Then their number starts to drop rapidly.

Studies have shown that after illness, 60% of people had a strong immunity to COVID-19, but after three months, only 17% kept the same level of resistance to disease. The amount of antibodies was reduced in 23 times, some survivors failed to detect.

Flash COVID-19 began in late 2019 in China. March 11, 2020, the world health organization declared the spread of the coronavirus pandemic.

According to data from the American Johns Hopkins University, the total number of infected people in the world exceeded $ 12.9 million, of which more than 7.1 million recovered, and more 569,1 thousand died.

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