A new study of the effects of the coronavirus showed the scientists that after the COVID-19 infection antibodies persist for 3 months. The research is carried out by the specialists from the Lunenfeld-Tanenbaum Scientific Institute and the Temerti School of Medicine at the University of Toronto. They used saliva and blood samples from the COVID-19 patients to measure and compare antibody levels.
The scientists found that IgG antibodies are present in the blood of people who had the virus. They have the ability to bind to the SARS-CoV-2 spike protein and can be detected for at least 115 days from the time of infection.
These antibodies are not only in blood but also in saliva. An immunology professor Jennifer Gommerman noted that antibodies against the virus protein are very resistant. Saliva can be used to test for antibodies. Although it is not as sensitive as blood serum, it is much easier to collect it for analysis.
The scientists used the LTRI platform to detect antibodies in serum, noting its high reliability and efficiency in assessing the spread of infection in society. It is another important tool for understanding the behavior of the virus and subsequently defeating it better. Most patients who are recovering from the coronavirus develop immune agents in their blood.
These are antibodies specific to the virus. They are useful for identifying who are infected, whether or not they show any symptoms. To obtain such results, a large group of scientists took part in the study, they involved dozens of patients who agreed to test blood and saliva.
Recently, much attention has been paid to the resistance of antibodies to the virus. A previous research showed that antibodies can disappear two months after the onset of infection, regardless of the manifestation of symptoms.