While infections worldwide, but with a clear stabilization after passing the days of greatest rebounds since the start of the pandemic, the great cause of this, omicron, has left new bad news. Through various studies, the presence of BA.2, a sublineage of this variant, which is known as “stealthy”, has been detected in up to 35 countries due to its difficult uptake by antigen tests and PCR.
First it was the covid-19 itself, then delta, then omicron and now it seems that BA.2 is the one who could create a new chaos in the fight against the pandemic. A deviation from the omicron variant itself that has been gaining strength in several countries, to the point of being the cause of a large number of cases.
Still under investigation, so it is not known by a specific name like other variants, it is believed that the first cases were detected in China but it is in India where it has gained the most relevance. To the point of being the dominant strain in several metropolises, in Europe the country where there is the most concern is Denmark with about 35% of total daily infections.
The reason for being “stealthy”
Too soon to know if it is more transmissible and BA.2 is undergoing many tests in those countries where it is already being detected. What is known is that it is difficult to capture, which is why it has received the nickname “stealthy”.
As the first investigations have reported, this variant would be more difficult to review by current tests to identify mutations. Also due to the antigen tests or PCRs that are done to find out if a person is infected or not, there are studies that consider that their presence in an organism can be a direct consequence of many ‘false negatives’.
Of course, in the majority of asymptomatic or mild cases, also a consequence of the vaccines, the next dates will be key to knowing if the world is facing another litmus test against the coronavirus or if it is a sign that the pandemic is beginning to spread. be endemic.
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