Experts say that even if the antibody decreases over time, its existence is very long-lasting
This Antibody Neutralized Coronavirus disease At least stay in the blood Eight months After the infectious disease occurred, according to an Italian study published on Tuesday.
This is a registered observation, “regardless of the severity of the disease, the age of the patient or whether there are other pathological conditions,” the famous Milan (northern) San Rafael Hospital in collaboration with the American Institute of Advanced Studies stated that . Salud (ISS), an agency that advises the government on public health.
San Raffaele and ISS explained in a joint statement that eight months after diagnosis, only 3 of the 162 patients had antibodies that were not positive.
Italian scholars believe that the early existence of these antibodies is “the key to a successful fight against hepatitis. infection They emphasized that those who do not give birth to them in the first two weeks after infection are more likely to develop severe covid-19.
This research was carried out by the Viral Evolution and Transmission Unit of San Raffaele Hospital in collaboration with researchers from the Diabetes Research Institute of the same entity. They developed a specific test for antibodies using technology used to study other types of antibodies. Autoimmune response.
Thanks to the HIV vaccine, researchers from San Raffaelle and ISS have also developed a new method for evaluating anti-HIV antibodies. SARS-CoV-2.
The study, published in Nature Communications on Tuesday, makes it possible to “map the evolution of antibody-to-antibody responses over time in an almost exhaustive manner.” Coronavirus disease“, estimated ISS and San Raffaele.
The study was conducted after 162 SARS-CoV-2 positive patients (67% of whom were men and an average age of 63 years) came to the San Raffaele emergency room during the first wave of pandemics in Italy.
The first blood samples were diagnosed as infection From March to April 2020, the last time will be at the end of November 2020.
At the time of diagnosis, 57% of patients had diseases other than COVID-19. The most common are hypertension (44%) and diabetes (24%).