Chinese scientists: SARS-CoV-2 infection can protect against re-infection:

Chinese researchers suggest that according to preliminary research, SARS-CoV-2 infection may protect against re-illness. Such conclusions were drawn after observation of royal macaques twice infected with SARS-CoV-2. The results of the study were published on the biorxiv.org website.
Chinese researchers explained that monkeys that had been in contact with the new coronavirus twice in a row did not re-infect. Four macaques were tested. Two of them were exposed to the virus twice, another two - only once. All animals were found to be susceptible to COVID-19, developed human-like symptoms, and produced specific antibodies in response to the virus. Dr. Chuan Qin, director of the Institute of Laboratory Animal Sciences at the Chinese Academy of Medical Sciences, points out that, according to research, antibodies produced by infected monkeys can protect them from being re-exposed to the virus.

Scientists add, however, that it is too early to draw the same conclusions for people. The study may, however, help find the answer to the question of how the human immune system reacts to SARS-CoV-2?

The results of the study are commented by specialists from various research centers. Dr Dean Winslow, a professor at Stanford University Medical Center, points out that although the Chinese discovery is a solid first step towards understanding the immune response to coronavirus, the study should be replicated in a larger primate group, and the next virus exposure should occur further from the first. Only then can it be seen whether immunity lasts for a long time and how it relates to clinical data in human patients.

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