The World Health Organization (WHO) said yesterday (Sunday) that the omicron strain is more contagious than delta and reduces the effectiveness of the vaccine, but according to preliminary evidence, it can not cause severe symptoms.
Delta strain, first identified in India earlier this year, has been the cause of most coronavirus infections worldwide. But the recognition of the Omicron strain in South Africa, which has a large number of mutations, has prompted countries around the world to impose travel bans on South African countries and reintroduce domestic restrictions to reduce its spread.
The Omicron strain has been identified in 63 countries since December 9, according to the World Health Organization. Rapid transmission of this strain from coronavirus has also been observed in South Africa, where the delta is less prevalent, and in the United Kingdom, where the delta is the predominant strain.
However, the report emphasizes that the lack of information means that it is not possible to say whether the rate of transmission of the omicron strain is due to the fact that it is less vulnerable to immune reactions, has a higher transferability, or is a combination of both factors.
However, there is evidence that the omicron strain can reduce the effect of the vaccine on the virus and prevent its transmission, according to Japan Today.