Oh, my God!
The Omicron family
New members are welcome again!
The latest two variants:
BA.4、BA.5
It is even called an "immune killer".
They can escape the vaccine,
and antibodies produced after infection,
It can be said that so far,
The strongest infectious strain too.
And these two variants,
It's now in Canada!
Image source: ICI Radio
According to multiple media reports, cases of new sub-variants of the new coronavirus Omicron variant, BA.4 and BA.5, have tripled in South Africa in the past week, and cases of infection have also occurred in Denmark, Scotland and England.
In the last month, they all had a history of travel. Health Canada also reported it, but did not specify in which province.
Image source: NPR
The World Health Organization added the two subvidurates to its surveillance list last month. Scientists have found that these two new sub-varieties can,
"The coronavirus that is emerging now is not a completely new variant, but the present," said scientist Tulio de Oliveira. Since Omicron was first discovered in South Africa in November, the variant has produced multiple sub-variants.
Image source: National Post
De Oliveira said BA.4 and BA.5 showed it
In unvaccinated people, the new sub-variant is perfect for dodging the immunity that arises in the body from infection with the original Omicron variant, although the latest sub-variants have evolved from the original Omicron.
Those who were infected before the Omicron outbreak may not have much immunity to BA.4 and BA.5, and those who were infected with Omicron but were not vaccinated were equally immune.
Source: CNN
The researchers studied blood samples from 39 people infected with the original strain of Omicron.
Fifteen people were vaccinated, eight of them Pfizer and 7 of johnson and johnson, while the other 24 were not vaccinated.
"Vaccinated samples have about 5 times more resistance than unvaccinated samples, and they should be better protected," the study demonstrates.
In unvaccinated samples, people in the face of BA.4 and BA.5 produced antibodies only in the face of the initial Omicron. Vaccinated human beings.
图源：Johns Hopkins Medicine
About 90% of south Africa's population has some immunity, mostly from previous infections. But as this natural immunity begins to wane after about three months, the number of re-infections is increasing.
Horacio Bach, an infectious disease specialist at the University of UBC in Canada, told the Canadian Medical Association: "Lifting public health restrictions also increases the risk of co-circulation and mixing of multiple SARS-CoV-2 strains." As long as people don't wear masks, there's a possibility of a new or hybrid variant. ”
Experts said that in view of the fact that the new sub-variant BA.4/BA.5 improves the ability to transmit and evade immunity,
The lethal poison king Delta fears a comeback
In a new paper, the outbreak researchers found that the Omicron variant may run out on its own in the coming months, while.
Image source: jpost
Professor Ariel Kushmaro and Karin Yaniv said,
Kushmaro monitored local sewage between December 2021 and January 2022 and found some disturbing interactions between Omicron and Delta.
They also built a model that shows that the latest variant, Omicron, is spreading rapidly around the world with record incidence, but Omicron is burning itself while
Source: Reuters
If the predictions come true, the Delta outbreak could recur, either
As many countries and regions around the world have lifted most of the epidemic restrictions, and people's immunity is weakened,
Image source: CBC
It seems that we survived the Omicron epidemic,
There is also the "Omicron sub-variant" outbreak,
Finally, it is also necessary to accept high fatality rates
The test of the poison king Delta!
When will the epidemic end?
Everyone must do a good job of protection!
statement:
1. The content published in this article, without the word "original", comes from the Internet, and the copyright belongs to the original author, if there is infringement, please contact to delete!
2. The above content is only reproduced, and the accuracy, reliability or completeness of the content in the text is for reference only.
Want to learn about questions about studying in Canada?
Any questions related to studying in Canada immigration,
I will answer you in detail!
Whatever the problem, come and poke me!