“The more contagious” Covid mutation “accounts for 85% of cases worldwide.”

According to a study in the United States, the mutant version of the coronavirus that has swept the world may be even more infectious than the original.

Scientists examined more than 5,000 patients at a hospital in Houston, Texas, and found that 99.9% of them were infected with a modified strain called D614G.

The findings seem to support the theory that the new strain, which is thought to account for 85% of the world’s cases, is more infectious than the original strain.

The D614G first appeared in Europe in February and has since spread worldwide in weeks by infected individuals traveling to the United States, Asia and Oceania.

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Experts are still trying to figure out exactly what makes the D614G strain more predominant, which is believed to be due to the increased amount of virus present in the upper respiratory tract of infected individuals.

The higher the viral load in the upper respiratory tract, the more likely it is that the infected person will spread when coughing, sneezing, or exhaling.

Returning to the beginning of the pandemic, the major strains were labeled “D” strains, MailOnline Report.

However, a new mutation occurred at a specific location on the SARS-Cov-2 virus spike protein called position 614.

It infects people through this spike. This spike latches on the ACE2 receptors in human cells, tricking them into opening and letting the pathogen in.

Mutations are relatively small and simple. It is named D614G because a single amino acid has been changed from D (aspartic acid) to G (glycine).

Data shows Within a month after its appearance in Europe in February, the D614G strain was detected in cases worldwide.

By May, it has caused more than 70% of infectious diseases worldwide, and the proportion is now estimated to exceed 85%.

According to the latest study, led by the Houston Methodist Hospital and published in a peer-reviewed journal mBIO, D614G accounted for 71% of infections during the first wave.

By the time the second wave hit the city during the summer, the number had risen to 99.9%.

Another September survey found similar numbers in New York.

Dr. Ilya Finkelstein, who co-authored the Houston study, said: “The virus continues to mutate as it travels around the world.”

However, according to a study by the Federal Institute for Scientific and Industrial Research (CSIRO), the change from strain D to strain G does not impede vaccine development efforts or their effectiveness.

Professor Seshadri Vasan, who led the study, said: ‘Despite this D614G mutation to the spike protein, we have confirmed through experiments and modeling that vaccine candidates are still effective.

“As in the case of influenza, strain G is unlikely to require frequent” vaccine matching “if it is necessary to develop new seasonal vaccines to combat circulating viral strains. I also understand. “

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