According to specialists, this particular strain has been circulating since late 2024. However, as of February 2026, it has already reached 23 countries and is currently detected in the wastewater systems of 29 U.S. states.
What Makes This New Variant Different?
BA.3.2 is derived from the Omicron strain but differs significantly from currently dominant variants. This new version of the virus has between 70 and 75 genetic mutations in its “spike protein”—the part of the virus it uses to latch onto and enter human cells. Vaccines are specifically designed to target this protein so the immune system can easily recognize the virus; however, due to such large-scale changes, “identification” becomes much more difficult for the body.
Will Existing Vaccines Be Effective?
Doctors explain that there is currently no evidence that “Cicada” causes more severe illness than the variants prevalent during the 2025-26 winter season. Nevertheless, due to its sharp genetic differences, existing vaccines may prove less effective. The immune system will require more time to recognize BA.3.2, allowing the virus to bypass certain defense mechanisms.
Special attention is advised for individuals with chronic conditions, as the risk of severe infection remains high for them. Additionally, while cases of “Long COVID” have decreased, it still occurs in approximately 3 out of every 100 cases.
Specialist Recommendations
Specialists urge the public to follow simple but effective rules:
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Frequent handwashing reduces the risk of respiratory infections by 16-21%.
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Staying home when feeling unwell, avoiding crowded places, and spending more time in open spaces are the best ways to prevent the spread.
Despite the fact that the immune system struggles to recognize the new variant, doctors still recommend vaccination, as it remains the primary safeguard against hospitalization and fatal outcomes.
