Health
The new Covid mutation can reinfect you. Is this what the researchers say?
The Omicron variant of coronavirus has become a new predominant strain, changing the course of the pandemic and dramatically increasing cases worldwide. What’s more, the new Omicron subvariants BA.2, BA.4, and now BA.5 have also caused havoc around the world. There is growing concern that this new subvariant could lead to reinfection of people and lead to another global surge.
Why are there so many types of Omicrons?
Mutations are a general concept of viruses. However, The Conversation reports that the majority of mutations have little or no effect on the ability of the virus to be transmitted from person to person or to cause serious illness.
When a virus accumulates a significant number of mutations, it is considered a different lineage (like different branches in a family tree). However, the strain of the virus is labeled as a mutant until it enhances the ability of the virus to transmit and / or accumulates some unique mutations known to cause more serious disease. It will not be.
This is the case for the BA strain (also known as B.1.1.529), which the World Health Organization has labeled Omicron. Omicrons are rapidly expanding and represent almost all current cases of genome sequencing worldwide.
Omicron spread rapidly and had many opportunities to mutate, so it also acquired its own specific mutation. These gave rise to several sub-strains, or sub-variants.
Is the Omicron subvariant a major threat?
According to global evidence, Omicron subvariants (especially BA.4 and BA.5) are particularly effective in reinfecting people infected with previous infections from BA.1 or other strains. .. There is also concern that these subvariants can infect vaccinated people.
However, recent studies suggest that a third dose of COVID vaccine is the most effective way to delay the spread of Omicron (including submutants) and prevent hospitalization with Covid.
“Recently, BA.2.12.1 has also spread rapidly in the United States and has been attracting attention as it was recently detected in Australian wastewater. Surprisingly, even if someone becomes infected with the Omicron subvariant BA.1. -Because of its ability to circumvent the immune response, it is possible to infect sub-strains BA.2, BA.4, and BA.5, “said the conversation.
The future of the Covid pandemic
As long as the virus is circulating, new Covid virus strains and variants will continue to emerge. Scientists continue to track new mutations and recombination events (especially with subvariants). We also use genomic technology to predict how these will occur and their impact on the behavior of the virus.
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