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On November 20, 2022, the School of Public Health of Harvard, Yale and Stanford uploaded the latest research progress on Omicron immune defense in the US population in medRxiv [1].
Results show: As of November 10, 2022
On Sunday, it is estimated that 94% of Americans have been infected with the new coronavirus at least once; 97.
8% of Americans are immune to the coronavirus; Research also warns that as the virus evolves and immune antibodies continue to decline, it is necessary to be vigilant against a new wave of new crown infections
.
8% of Americans have immunity to the new crown virus and need to be wary of a new wave of new crown infection
.
The paper is "Changes in population immunity against infection and severe disease.
"
from SARS-CoV-2 Omicron variants in the United States between December 2021 and
November 2022”
。
Key findings
Key findings1.
Immune protection and attenuation
established by infection/vaccination.
Immune protection and attenuation
established by infection/vaccination.
The model is seated according to vaccination and infection
.
For example, if you have been infected with the Omicron mutant strain + booster vaccine, the prevention effectiveness against severe disease is higher than 95%, and even by 50 weeks, the effectiveness in preventing Omicron infection is still more than
70%.
If booster vaccination is given, the effectiveness against severe disease is about 76% and less than 20%
against infection with Omicron.
(Infection/vaccination established immune protection and attenuation)
2.
Proportion of people with different immune status
Proportion of people with different immune status
The research model showed that 7% of the population with superinfection in the United States, 55.
7% of the population with repeated infection + vaccination, 2.
4% of the population with only one infection, and 29.
1%
of the person with one infection + vaccination pair.
That is, 94.
2% of Americans have been infected with the new coronavirus
.
2% of Americans have been infected with the new coronavirus
.
Only 3.
6% had been vaccinated and had not been infected
.
2.
1% of the population has neither been vaccinated nor infected
.
1% of the population has neither been vaccinated nor infected
.
(The state of immunity of Americans to covid)
3.
Multiple infections are more common, but the population is more optimistic
.
Because Omicron is highly contagious and most Americans have taken off their masks after summer vacation, the rate of reinfection is increasing
.
Repeated infections, plus vaccination, from December 2, 2021 to November 9, 2022; The protection of the American people against new crown infection increased from 22% to 63%; For the prevention of Omicron
Protection against severe infection increased from 61%.
89%
。 Although the infection rate of the American people is gradually increasing, and even the proportion of repeated infections is increasing, the people's mood for the new crown is becoming more and more optimistic, especially the optimism about preventing severe disease has reached more than
96%.
Multiple infections are more common, but the population is more optimistic
.
For the prevention of Omicron Protection against severe infection increased from 61%.
More than
96% were optimistic about preventing severe disease.
Brief summary:
Brief summary:Research by the Public Health School of Harvard, Yale, and Stanford answers some of my biggest concerns:
1), No wonder I can hardly find friends
in the circle of friends in the United States who have not been infected with the new crown virus.
94.
2% of the population has been infected
.
2% of the population has been infected
.
2), No wonder most people don't wear masks anymore
.
Protection against severe Omicron infection increased from 61% in the U.
S.
population
89%； Among them, infected with the Omicron mutant strain + booster vaccine, then the prevention effectiveness of severe disease is higher than 95%.
89% have been infected with the Omicron mutant + booster vaccine, so the prevention effectiveness against severe disease is higher than 95%
Coupled with Paxlovid antiviral treatment, recent deaths in the United States have also fallen to their lowest point since the pandemic
.
As a result, the public's optimism about the new crown has gradually increased
.
I am also particularly interested in the 2.
1% of people who are neither vaccinated nor infected with the new crown; Most should be newborns
.
Just want to say, the adults here, hurry up and register with the National Institutes of Health, maybe the antidote (gene) to find human complete prevention of the new crown is in you
.
A new wave of pandemic risks is also accumulating
.
.
The mood of the American public towards COVID-19 has fundamentally changed, with 76% optimistic about preventing infection and 96%
optimistic about preventing severe disease.
But researchers also warn that due to the evolution of the new coronavirus and the gradual decline of immunity, the United States is also at risk
of a new wave of new coronavirus infections.
Write at the end
.
.
Due to vaccination and infection, the American population is currently protected against Omicron
The protective power of severe new crown is 89%; Among them, the protection against severe disease in the group with booster vaccination + infection is more than 95%.
This situation has led to a continuous increase in public optimism
.
But it also needs to be seen that behind the current number of new deaths in the United States at the low point since the pandemic, those who are susceptible to the new crown have left the world forever, and reached 1.
08 million!
Compared with the way the United States prevents the new crown, I prefer the epidemic prevention measures
in New Zealand under the European and American cultural circles or Singapore in the East Asian cultural circle.
They are all zeroed out in the early stage of the epidemic without vaccines, fully vaccinated in the medium term with vaccines, and orderly liberalized
in the later stage when they cannot be prevented.
Perhaps some friends say that both countries are small countries with small populations
.
Then, Japan and South Korea, which belong to the same East Asian cultural circle, can actually give us a lot of experience
.
Make every effort to promote enhanced vaccination, excellent public compliance and acceptance of wearing masks, and social liberalization but control of gatherings; are key factors
in the fact that these countries are at a global low cumulative number of deaths per million people.
(Effective measures
for epidemic prevention.
) Photo by Eric Topol)
Reference sources:
Reference source: Reference source:【1】
【1】
