Omicron XBB.1.5, or the Kraken, is a relatively new subvariant that caught the attention of experts worldwide since it caused an uptick in hospitalizations in different regions. Here is everything we have gathered about this subvariant.
What is the XBB.1.5 subvariant?
While its ancestor, the XBB variant, originated in Singapore, the XBB.1.5 ‘Kraken’ subvariant was first identified in New York in October 2022.
It’s a hybrid formed from two Omicron BA.2 sublineage strains.
While current evidence doesn’t suggest heightened severity compared to other Omicron strains, it’s linked to a spike in hospitalizations, especially in the Northeast.
Why is the XBB.1.5 variant called The Kraken?
Named after the mythical sea creature, Kraken, the XBB.1.5 subvariant captures attention due to its rapid spread and significant impact on infection rates, which is reminiscent of the legendary sea monster’s many tentacles.
What are the symptoms of the Kraken subvariant?
If you’re infected with the Kraken subvariant, you may experience symptoms similar to other variants of COVID-19, including:
- Fever
- Cough
- Shortness of breath
- Fatigue
- Muscle aches
- Sore throat
- Loss of taste or smell
- Headaches
Notably, some people infected with the Kraken variant have reported experiencing more of these symptoms:
- Pronounced fatigue
- Severe muscle ache
- Gastrointestinal symptoms such as diarrhea and nausea
How fast does the XBB.1.5 variant spread?
This subvariant is labeled by the World Health Organization as the most transmissible Omicron strain, with cases accounting for 94% and 53% of infections in New England and the Midwest, respectively, by early February 2023. Nationally, XBB.1.5 cases surged to 75% by mid-February of 2023.
What happens if you’re infected with XBB.1.5?
The impact of XBB.1.5 on the severity of disease manifestations is currently under careful investigation by health experts. While there is no conclusive evidence suggesting that XBB.1.5 causes more severe illness than other Omicron strains, experts are paying attention to its effects on people, especially those at higher risk of severe outcomes.
Can you still get XBB.1.5 if you’re vaccinated?
Preliminary data suggests that Pfizer-BioNTech or Moderna bivalent boosters provide solid protection against this subvariant. A recent CDC study demonstrated the efficacy of bivalent boosters in providing protection against XBB and its derivative, XBB.1.5. Recommendations emphasize the importance of receiving the bivalent booster to enhance immunity.
Should you be concerned about a new wave of COVID-19 cases?
As the situation continues to develop, older adults and those at higher risk of severe illness, should remain cautious and adhere to public health guidelines to mitigate the potential for a new wave of COVID-19 cases.
In general, stay informed about the latest recommendations, and get vaccinated against COVID-19 to protect yourself and others around you.
Frequently asked questions
How does the XBB.1.5 compare to other Omicron variants in terms of transmissibility and severity?
Ongoing research is needed to answer this question.
What makes the XBB.1.5 subvariant different from other COVID variants?
The XBB.1.5 ‘Kraken’ subvariant is highly transmissible. Though not proven to cause more severe illness, this variant still poses risks, particularly for vulnerable populations.
Are there any specific demographics or groups that are particularly vulnerable to XBB.1.5 infections?
Those who are more vulnerable to XBB.1.5 infections include older individuals and those with underlying health conditions prone to severe illness.
What additional precautions or public health measures are recommended to prevent the further spread of the XBB.1.5 variant in communities?
To prevent further spread of the XBB.1.5 variant, recommended measures include enhanced surveillance, increased testing availability, promoting vaccination, reinforcing mask-wearing, ensuring adequate ventilation in indoor spaces, encouraging physical distancing and timely isolation or quarantine protocols.
Key takeaway
The rise of Omicron XBB.1.5 ‘Kraken’ is another obstacle in the collective effort to manage COVID-19. Though research is ongoing regarding its transmissibility and potential impact on vaccine efficacy, it’s recommended to continue practicing preventive measures to protect yourself and those around you.
