Immunity is maintained for at least 8 months after infection with the new coronavirus

BEIJING, Dec. 23 (Xinhua
) -- Australian researchers have revealed for the first time that protective neutral antibodies can remain in the human body for at least eight months after infection with the new coronavirus, preventing it from re-infection, Physicist Network reported Tuesday. The researchers say the study is the strongest evidence that a vaccine against the new coronavirus may be effective in the long term.
study was published in the latest issue of Scientific Immunology. The authors write that they found that specific cells in the immune system called memory B cells "remember" viral infections, and that if exposed to the virus again, it triggers a protective immune response by rapidly producing protective antibodies.
researchers say the new study dispels concerns that the first wave of antibodies against the new coronavirus may weaken in a few months, but the new study dispels those concerns.
In the latest trial, a team led by Menno Vanzem, an associate professor in the Department of Immunology and Pathology at Monash University, recruited 25 patients with neo-coronary pneumonia and took 36 blood samples from them between the fourth day of infection and the 242nd day after infection.
other studies that focused only on antibody responses, the researchers found that antibodies against the virus began to decline 20 days after infection. Importantly, however, all patients have memory B cells that identify one of the two important forms of the new coronavirus, the hedgehog protein and the nuclear crust protein. Moreover, the researchers found that these virus-specific memory B cells remained stable for eight months after infection.
VanZem said the results suggest that any new coronavirus may be able to prevent the virus, which could explain why there are so few real cases of re-infection among the millions of people worldwide who have tested positive for the new coronavirus.
these results are important because they clearly show that patients infected with the new coronavirus do retain immunity to the virus and disease," said Dr. Vanzem, a government source at the hospital. This gives hope that once one or more vaccines are developed, they will provide long-term protection. "