People Reinfected With COVID May Not Transmit Deadly Virus

People reinfected with the coronavirus may have a lower risk of transmitting it to others, as found by a team of researchers from the National Institute of Infectious Diseases and Nagoya University, Ryo Watanabe reported for Mainichi Japan.

Individuals reinfected with COVID-19 can rapidly produce an immune substance that reduces the virus's infectivity, making them less likely to spread it to others when the virus is shed from their bodies.

The team observed that individuals reinfected with COVID-19 can rapidly produce an immune substance that reduces the virus's infectivity, making them less likely to spread it to others when the virus is shed from their bodies.

This analysis, utilizing human subjects, is the first to demonstrate that the earlier this immune substance is produced, the shorter the period of viral shedding.

Among the substances generated by the body's immune system, the research team focused on a "secretory antibody" produced on the mucosal surface of the nasal cavity.

This specific type of antibody, produced by immune cells, plays a role in efficiently eliminating harmful foreign substances that enter the body through the mucous membrane of the nasal cavity.

The findings are set to be published in the US academic journal Proceedings of the National Academy of Sciences (PNAS).

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