New COVID variant Stratus (XFG) spreads in the US: Symptoms, risks, and what you need to know
While initially flying under the radar in the US, XFG accounted for 14% of all cases by late June, making it the third most prevalent variant according to the Centers for Disease Control and Prevention (CDC). Globally, the World Health Organization (
WHO
) has added XFG to its monitoring list, though it continues to classify the variant's overall public health risk as low. Experts reassure that current COVID-19 vaccines remain effective against symptomatic and severe disease caused by this strain.
What is the new covid variant in the US Stratus (XFG) and how is it different
XFG is a recombinant variant, meaning it combines genetic material from two earlier strains: F.7 and LP.8.1.2. While LP.8.1.2 is now the second most common strain in the US, XFG is notable for its mutations that may help it evade the immune system.
Importantly, experts emphasize that these mutations do not make XFG more dangerous. According to Dr. Subhash Verma, microbiology and immunology professor at the University of Nevada, XFG does not cause more severe illness or different symptoms compared to earlier Omicron variants.
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Health authorities classify the variant as low risk, but continued monitoring is essential to track its evolution.
How fast is this covid variant
As reported by USA Today, XFG's prevalence in the US has increased rapidly in recent months:
March 2025: 0% of cases
April 2025: 2% of cases
May 2025: 6% of cases
Late June 2025: 14% of cases
Globally, the WHO reported a rise from 7.4% in early May to 22.7% by the end of June across 38 countries. Despite this growth, XFG has not surpassed the top two variants, but its upward trend underscores the importance of ongoing genomic surveillance and vaccine coverage.
Symptoms of Stratus (XFG) variant
As USA Today reported, know the familiar COVID-19 symptoms for XFG infections. These include:
Fever or chills
Cough
Fatigue
Sore throat
Loss of taste or smell
Nasal congestion
Muscle aches
Shortness of breath
Headache
Nausea or vomiting
Health officials stress that symptom patterns remain consistent with prior Omicron variants, and early testing, vaccination, and isolation are key to controlling spread.
Prevention tips for Stratus (XFG) variant
To reduce the risk of infection from the XFG variant (Stratus), follow these recommended safety measures:
Stay up to date with COVID-19 vaccines: Ensure primary doses and booster shots are current, as vaccines remain effective against severe disease.
Practice good hygiene: Regular handwashing, using hand sanitizer, and avoiding touching the face can reduce transmission.
Wear masks in crowded or enclosed spaces: Especially in public transport, healthcare facilities, or areas with high case counts.
Maintain physical distancing: Avoid close contact with people showing respiratory symptoms.
Monitor symptoms and test early: Get tested if you experience fever, cough, fatigue, or other COVID-related symptoms.
Isolate if infected: Follow local health guidelines to prevent spreading the virus to others.
Ventilate indoor spaces: Increase airflow in homes, offices, and public spaces to reduce viral concentration.
Disclaimer
:
The information provided in this article is for general educational purposes only and is based on data available from the reputable news sources as of August 2025. It should not be considered medical advice. Always consult healthcare professionals for personal guidance on COVID-19 prevention, testing, and treatment.
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