According to a Greek study conducted by EKPA in collaboration with the US National Cancer Institute, patients receiving treatment for coronavirus retain high levels of SARS-CoV-2 antibodies even 8 months after infection.
The production of antibodies by the human body after infection with COVID-19 is of particular importance as it can provide valuable information on the duration of the “response” provided by vaccines.
Data from studies by Greek scientists on the duration of the presence of antibodies to SARS-CoV-2 8 months after natural infection with coronavirus were recently accepted for publication in the official journal of the European Society of Pathology, the European Journal of Internal Medicine.
The groundbreaking study tested 148 people who recovered from COVID-19 infection between April and July 2020. All participants had a PCR confirmed diagnosis of SARS-CoV-2 infection, followed by two negative PCR results for SARS-CoV- 2, with an interval of 7 days.
The study is coordinated by EKPA School of Hematology Professors Evangelos Terpos, Marianna Politu and Meletios A. Dimopoulos (Rector of EKPA), as well as Prof. Georgios Pavlakis, Director of the National Cancer Institute (NCI) in the USA, and Barbara Fleber, M.D. Department of Biology of Human Retroviruses, National Cancer Institute (NCI) in the United States.
At the time of the COVID-19 diagnosis, 91 (61.5%) patients were symptomatic but did not require hospitalization, and 57 (38.5%) were admitted to Greek hospitals. Three blood samples were taken to determine antibodies to SARS-CoV-2. The first test within 2 months after the day of the onset of the first symptoms of the disease, the second – after 6 months and the third – 8 months after the onset of symptoms.
The antibodies have been found to provide effective protection even 8 months after infection with COVID19.
Because vaccines produce very high levels of antibodies in the human body, in excess of the “naturally produced” in the patient during the course of the disease, it is believed that the person will be protected for at least the same period of time.