The variability of the coronavirus delta differs significantly from previous strains of the virus, health officials are aware of. And those differences may mean a return to certain restrictions that people previously thought about vaccination.
The mutation is not only contagious but also painful. And even people who have been vaccinated may become infected and may not have the same virus particles in their noses as new vaccines, indicating new potential concerns about the vaccine’s ability to stop the spread. But experts warn that there is more to the disease than the levels of the virus in the nose.
Here are five things you need to know about the new Delta data
1. Vaccinated people can be infected in the Delta, but the vaccines are still working.
On July 30, researchers reported that out of 470 people in the Massacre Massacre, about 75 percent, 350 had been fully vaccinated. Weekly Report of Illness and Death. Public health officials have linked many of those issues to indoor and outdoor events, such as bars and rental properties. The first known Delta virus outbreak in India was one of 133 COVID-19 cases or 90 percent of 120 cases at the time of the outbreak.
But even though the vaccines do not seem to work, the high doses of vaccines may be due to the county’s high doses, the researchers said. As of July 3, 70 percent of eligible people in Barnstable County will be vaccinated. When more people in a community get vaccinated, a person who has been tested positive for the virus will be more likely to be vaccinated. This is because the vaccines are not 100% effective.
Importantly, COVID-19 vaccines still protect people who have been vaccinated against serious illness. As of July 27, five people were hospitalized, including one who had not been followed.
Of the 162 million people vaccinated in the United States, 35,000 are infected with symptoms every week. About 21 COVID-19 cases per 100,000 people are fully vaccinated each week. This compares with about 179 infections per 100,000 unvaccinated people each week.
In terms of hospitalization, two to three out of every 100,000 people who are not vaccinated are admitted to hospital every week, and one person dies every 100,000 people according to CDC estimates. That is about 25 times the number of people who are fully vaccinated. Of those fully vaccinated, 0.1 per 100,000 people are hospitalized each week and 0.04 per 100,000 die every week.
2. Vaccinated people can easily transmit delta to others, but there is a big warning for that.
In that Massachusetts study, both unvaccinated and vaccinated people in the Delta variant showed the same virus loads when they were tested by PCR and had the same coronavirus gene in their noses. Although those high levels of the virus themselves are much more resistant than covad-19, vaccinated people are more likely to transmit the delta than other variants of the coronavirus.
That “relevant” finding is based on the agency’s recommendation that vaccinators in some cases wear masks at home, according to CDC Director Rochell Walensky in a July 30 statement.SN: 7/27/21).
But this discovery comes with major warnings. “The results show how much RNA virus is in the sample, it doesn’t tell you anything about the transmission,” said Susan Butler-Wu, a clinical microbiologist at the University of Southern California. “This is a cause for concern,” he said, “but this is not the right answer for people who have been vaccinated.”
“We know in advance that when a person with a vaccine becomes infected and the symptoms occur, they will have a higher viral load,” Tler-Wu said. However, the immune response to the vaccine can disrupt many of the virus particles.
“Most of these virus particles may be covered in antibodies,” says Brett Lindenbach, a virologist at Yale University.
The Delta variant may be more easily transmitted from vaccines than the previous variants, but it does require detailed studies that accurately list the mechanisms by which people are vaccinated. Lindenbach and Butler still say that wearing a mask for both vaccinated and unvaccinated people will help reduce the spread of the delta.
3. The Delta variant can actually make people sick.
Three recent studies in Canada, Singapore, and Scotland have shown that alternatives increase the risk of hospitalization, intensive care, and death.
Ashley Tute, an epidemiologist at the Dala Lana School of Public Health at the University of Toronto in Canada, analyzed data from the province of Ontario to see if a variety of coronavirus infected people. She and her colleague David Fishman had information about who was infected and what the outcome of the infection was. Even after vaccination, age, and health status, the Delta variant has a 120% increased risk of hospital admission, and 287 per cent ICU. “And that’s what we see with Alpha,” says Tute.
Primary study in Singapore b Lancet On June 7, the pre-publication server SSRS found that the Delta variant doubled the risk of pneumonia compared to previous species and increased the risk of seeking additional oxygen.
Those initial data have not yet been reviewed by other scientists, but agree with the information published in Lancet June 14 from a study in Scotland. There, researchers found that the delta variant doubled the risk of hospitalization compared to the alpha variant.
There is evidence that the vaccines are relatively effective in the Delta variant compared to previous species. Vaccination still reduces the risk of these serious problems. Vaccines are similar to using a fire extinguisher in a kitchen fire, says Paul Ofit, director of immunization education at Philadelphia Children’s Hospital. The goal is to keep the rest of the house from burning down. The virus enters cells in the nose, throat and lungs and begins to multiply there, “so you have an unknown infection or a mild illness,” says Offett.
However, he said, a person’s immunization will begin two days later and prevent the infection from becoming more serious. It is easier to prevent moderate to severe disease than to prevent mild illness.
4. Delta is more contagious than previous coronavirus viruses.
An unvaccinated person infected with the virus, which was first introduced in late 2019, usually transmits the virus to an average of two to four people.
A person with a delta variant can transmit the virus to an average of five to 10 others. That, along with the chicken pox transmission, was originally obtained and published equally from CDC documents Washington Post Show.
5. Public health measures, such as vaccines and masks, remain essential tools.
CDC recommends returning to a mask, as it is one of the most effective tools to prevent infection.
N95 masks are effective in all settings, but when surgical masks have a lower concentration of viruses in the air, a team of international researchers calculated on June 25 will be better. Science Study. And their calculations suggest that masks work better when everyone wears a mask, rather than catching and spreading the infection. And well-fitting masks are better protected if there are gaps at the top or sides, previous studies have shown (SN: 2/12/21).
Three-layer cotton masks are also effective, researchers reported July 2 Weekly Report of Illness and Death.
Researchers tested a number of stops for the virus-carrying aerosol particles in the head of the meninge with a cotton mask and without “breathing.” If all environments wear masks, the amount of airborne droplets in the air is reduced by 72 percent when they do not cover them.
Combining masks with proper ventilation and filtration may be more beneficial (SN: 5/18/21). In the Manicquin study, researchers performed two HEPA filters at different locations around the room. HEPA filters reduce exposure to airborne particles by 65% compared to filters and masks. When all identities were masked and HEPA filters were turned on, the average particle size decreased by 90%.