The arrival of Ómicron and its sublineages -BA.4 and BA.5- changed the panorama of global positives, becoming the dominant variant of cases in summer and responsible for the spike in infections several months ago.
In recent weeks, the United Kingdom and the United States have detected many cases with a new variant: BA 4.6, a sublineage of Omicron whose origin is still unknownalthough its appearance is already being investigated by experts.
For now, it represents 3.3% of the samples analyzed in the UK, while the figure rises to 9% in the US, according to calculations by the Department of Medical Microbiology at the University of Westminster. The health authorities point out that it is a “recombinant” variant, which is what occurs when two variants infect the same person at the same time.
However, BA.5 remains the most dominant and contagious. The problem with the new sublineage is that it replicates “faster in the early stages of infection and has a higher growth rate”according to the professor at the University of Westminster, Manal Mohammed.
More society news
What are the symptoms of BA 4.6?
Much remains to be investigated as it is a new variant, although the first indications suggest that its symptoms would be similar to those already known. These are the main symptoms:
- Fatigue or asthenia
- Headache or headache
- Runny nose
- Myalgia or muscle pain
- Anosmia and ageusia (lack of smell and taste)
- Dyspnea or shortness of breath