Study Reveals Salivary Glands As a New Target for SARS-CoV-2


With the COVID-19 outbreak continuing around the globe, new mutants of SARS-CoV-2 are rapidly rising. These new variants are more contagious and can better dodge one’s immune response.

The SARS-CoV-2 spike protein, in certain RBD, is pivotal in binding to host receptors, essentially the ACE2 in humans. One highly conserved domain of the RBD, termed antigenic site II, can extract neutralizing antibodies. Nevertheless, this region is frequently inaccessible as the RBD confirmation, and there are a low fraction of antibodies targeting this site in infected people.


“If younger children are less capable of spreading contagious virus, daycare, in-person school and careful extracurricular activities may be safe to proceed, with appropriate precautions in place, and with lesser risk to childcare staff, teachers and support staff than originally anticipated,” stated Bullard.


Fourteen researchers from various disciplines at the University of Manitoba, Manitoba Health, and Seniors Care, and the Public Health Agency of Canada’s National Microbiology Laboratory, and Cadham Provincial Laboratory examined samples from 175 children along with 130 adults in Manitoba infected with SARS-CoV-2 to comprehend if there was a difference in infectiousness. Using cell cultures of nasopharyngeal swabs, they examined viral loads in both groups to discover if children were more infectious or adults.

Potential use against a wide range of SARS-CoV-2

Using computational study, the organization determined what RBD mutations could escape the antibody from the wiring. They found some RBD mutations disrupt the binding of the antibody. The substitution of the deposit at position 504 gave the most notable disruption in binding.

When they replicated a pseudotyped SARS-CoV-2 virus in the presence of the S2X259 antibody, the only mutation they found was caused by particular pressure as G504D. This mutation has been seen rarely in human isolates.

Some researchers have found that kids may not be as infectious in increasing SARS-CoV-2, the virus which causes coronavirus, to other people as of earlier thought.


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