74% of Delta variant infections have this in common, a new study indicates
A new study revealed that the majority of Delta variant COVID-19 infections occur in this situation.
In recent months, theDelta variant has been found to be a more virulent and contagious version of the Covid-19 virus than all that happened before that. Scientists continue to study the variant to determine what makes it so much more communicable and mortal, but a new report published in the journalNature Discovered that the three-quarters of infections caused by the Delta variant have one thing in common that proves that it spreads differently and more powerful than the previous strains of COVID-19.
Naturewatched apre-printed with a study Outside the University of Hong Kong, which has not yet been examined by peers. The head of the epidemiology and biostatistics division of the university,Benjamin Cowling, PhD and his researchers' colleagues have studied data from 101 people in Guandong, China, who had been infected with the Delta variant in May and June. The researchers were interested in determining how covid infections caused by the Delta variant broadcast of these people to their relatives relatives and friends and how these infections differed from previous variant transmissions.
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The study revealed that there is usually a 1.8 day gap between positive tested persons forCOVID-19 caused by the delta variant and the beginning of the symptoms, which is more than twice as long as for other variants of COVID-19. For those who have contracted the previously dominant alpha variant of the virus, for example, the time between the positive tests and showing symptoms was only 0.8 days.
Researchers found that a 74% increase in all Delta Covid-19 variant transmissions occurred in the two-day window before infected patients started to feel symptoms. This longer window, indeed, means a greater chance that someone spread the virus to another person during their presymptomatic phase because they do not know they are sick.
"Although the previous version of COVID-19 was as transferable as colds, theThe delta variant is more transmissible seasonal flu, poliomyelitis, smallpox, ebola and bird flu, and are as contagious as chickenpox, "Stefen Ammon, MD, the Director of DispatchHealth Covid-19 Working Group told Healthline.
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It is clear that part of what makes the delta variant so powerful is that people can spread the disease up to two days before starting to feel symptoms. The longer transmission window also applies to vaccinated people who contract abreakthrough case of the delta variant, which could be less likely to suppose they are sick while carrying high levels of the virus in their body.
According to an internal memo ofRochelle Walensky, MD, the Director of Disease Control Centers (CDC), which was obtained byThe New York TimesAt the end of July, people vaccinated with Delta variant infections "wear as many viruses in the nose and throat as unvaccinated people and can expand it just as easily, so less often." Indeed, it means that vaccinated people who contract the delta variant can not yet feel sick, can always transmit the virus on non-vaccinated and otherwise immunocompened people quite easily.
To add to this perfect storm, Cowling stated that the researchers also found that people infected with the Delta variant had higher viral loads - meaning higher concentrations of viral particles - in their bodies than those infected with variants. previous. A study revealed that delta variant carriers had viral loads up to1,260 times higher that people infected with other strains of the virus. "The Delta strain is more contagious, in part, because infected individuals wear and lead more viruses than previous versions," said Ammon at Healthline.
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Since the Delta variant is much more contagious than the previous variants, CDCs and other health organizations recommend that you continue to hide and take precautions, especially since the US vaccination rate flies. About 52% and the Delta variant is considerably larger. dangerous for unvaccinated people,Anthony Fauci, MD and othersThe experts warn.
In fact, Fauci, Director of the National Institute of Allergy and Infectious Diseases, saidMeet the press in July that morethat 99% of all deaths related to Covid In the United States, in June 2021, let us mention unvaccinated persons.
"Obviously, there will be people, because of the variability between people and their response to the vaccine, which you will see people vaccinated and who still have trouble and be hospitalized and dyed," A-T -he declares. "But the overwhelming proportion of people who have problems are unvaccinated problems. What is the reason we say that this is really completely avoidable and preventable."
