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People who get vaccinated twice are barely protected from omicrons – but those with boosters are in good shape

Since omicron variant first discovered in the United States last month, many scientists feared that the variant had more unique mutations than its homologous variants (including Delta) could make omicrons more adept at evading existing vaccines. A new study corroborates those concerns, but also offers a glimmer of hope for those who have had a booster shot.

inside Articles mentioned, researchers from Imperial College London’s COVID-19 response group found that the vaccine’s effectiveness against omicrons was between 0 and 20 per cent for people who had been fully vaccinated with two doses. Vaccine. That efficiency range, from 0 to 20 percent, sounds bleak. But for those who also got the booster shot, the vaccine’s findings on the effectiveness of the vaccine against omicrons were much better.

Specifically, people who had had three shots – that is, two doses plus a booster shot – saw vaccine effectiveness between 55% and 80% compared to the omicron variant.

The large gap between the two ranges suggests that a boost shot is crucial for protection against omicron variation. The finding also reinforces public statements by a number of public health experts, including former FDA commissioner Dr. Scott Gottlieb, who have stated that they believe a COVID-19 vaccine should be category three. dose, not two doses.

Sure, the three-dose vaccine isn’t unusual; Cuba’s COVID-19 vaccine, yes 92.4% effective, and the HPV vaccine, both of which are three-dose vaccines.

Additionally, the Imperial College London COVID-19 response team has made other intriguing findings regarding the re-infection potential of the omicron strain. Indeed, their study found that people infected with the omicron strain were 5.4 times more likely to be reinfected than those infected with the delta strain. Therefore, the scientists say that past infection with omicrons is less likely to protect against reinfection. Remarkable, Research does not show that omicrons can cause more severe disease than delta.

Likewise, patients who became infected with omicrons two weeks or more after their second dose of vaccine were more likely to develop symptomatic infections than those who had delta infections within the same time frame. The same is true for people who received the AstraZeneca and Pfizer vaccines two or more weeks before their booster shot.

The study has yet to be peer-reviewed, but has been presented in the latest report from the World Health Organization’s Collaborative Center for Infectious Disease Modeling.


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The omicron variation brought a third breeze to the COVID-19 pandemic, prompting President Biden to Notification last week that he would give half a billion home coronavirus tests, while also warning unvaccinated people that they are playing with “life or death” for both themselves and those around them.

Although omicrons are more transmissible and more vaccine-evasive than earlier strains of COVID-19, even being partially vaccinated significantly reduces a patient’s chance of severe infection. Indeed, as this study seems to confirm, being fully vaccinated and boosted virtually guarantees that, even if a patient develops a symptomatic infection, it will not be so severe. they have to be hospitalized.

Experts fear that one of the biggest threats from omicrons is that it will send too many people to hospitals – especially those who are unvaccinated or inadequately vaccinated – leaving the health system in will be overloaded. According to US infectious disease expert Dr. Anthony Fauci, the last weekly average for COVID-19 cases was 150,000, an upward trend mainly driven by omicrons overtaking the once dominant delta strain. While there are early signs that this worst-case scenario may not be the case, Fauci warned of complacency.

“If you have many, many other people with less severity, that can negate the positive effect of reducing severity as you have more people,” Fauci told reporters. “. “And we’re especially worried about the people in that unvaccinated class. Those are the people who are most vulnerable when you’re infected with a virus that’s particularly effective at reaching people and spreading the virus. infect them the omicron way.”

What we know about omicron:

https://www.salon.com/2021/12/27/booster-shots-omicron/ People who get vaccinated twice are barely protected from omicrons – but those with boosters are in good shape

Caroline Bleakley

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