New NB.1.8.1 COVID Variant & Early Flu: What to Know – May 2025
As of late May 2025, health authorities have identified a new COVID-19 variant, NB.1.8.1, in the United States. This variant, a descendant of the JN.1 lineage, has been linked to a surge in cases in China and parts of Asia. Simultaneously, CDC surveillance reports show early flu activity emerging in the Southeast and Midwest, an unseasonal trend that may signal an intensified respiratory illness season. The presence of both threats—COVID and influenza—underscores the importance of dual COVID and flu testing kits for timely detection and institutional preparedness.
Where NB.1.8.1 is spreading
NB.1.8.1 has been detected through the Centers for Disease Control and Prevention's (CDC) airport screening program, with cases identified among international travelers arriving at major U.S. airports, including those in California, Washington state, Virginia, and the New York City area. Additional cases have been reported in states such as Ohio, Rhode Island, and Hawaii.
Symptoms and risk factors
Early studies suggest that NB.1.8.1 may spread more easily than previous variants, although it does not appear to cause more severe illness. Symptoms associated with this variant include fatigue, mild respiratory issues, sore throat, and slight fever—symptoms that differ slightly from those of earlier strains.
Despite the emergence of NB.1.8.1, overall COVID-19 activity in the U.S. remains low. National wastewater data and reported deaths have significantly decreased compared to previous years. However, health experts caution that the situation could change, especially with the introduction of new variants.
CDC and FDA response
The CDC continues to monitor the situation closely, and while NB.1.8.1 has not yet been included in the agency's COVID Data Tracker due to the low number of cases, its presence underscores the importance of ongoing surveillance and institutional testing readiness.
In response to the evolving landscape of COVID-19 variants, the FDA's advisory committee has recommended updating COVID-19 vaccines to target newer strains, specifically those related to the JN.1 variant, such as LP.8.1. This recommendation aims to enhance protection against circulating variants, including NB.1.8.1.
Additionally, the FDA is considering restricting COVID-19 vaccine approvals to high-risk groups, including individuals aged 65 and older and those with underlying health conditions. This potential policy change has sparked debate among experts and the public regarding vaccine accessibility and public health implications.
Why dual COVID and flu tests matter
The detection of NB.1.8.1 and early signs of flu resurgence highlight the continued need for accessible and reliable COVID-19 and flu combo test kits. Early identification of infections is crucial in preventing the spread of respiratory illnesses in schools, clinics, and workplaces.
At-home testing remains a convenient option for many, and some insurance plans continue to cover the cost of over-the-counter COVID-19 and flu A/B test kits. Individuals and institutions are encouraged to check with their insurance providers for coverage details.
COVID at-home test kits - These test kits allow individuals to test for the virus at home, providing quick results and helping to prevent the spread of infection, especially in high-risk environments like schools, workplaces, and gatherings.
How to stay protected
To mitigate the risk of infection, health authorities recommend the following preventive measures:
- Vaccination: Stay up-to-date with COVID-19 vaccinations and boosters, especially if you are in a high-risk group.
- Mask-Wearing: Wear masks in crowded or poorly ventilated areas, particularly if local transmission rates are high.
- Hand Hygiene: Regularly wash hands with soap and water or use hand sanitizer with at least 60% alcohol.
- Testing: If you experience symptoms or have been exposed to someone with COVID-19 or influenza, get tested promptly using home test kits.
- Air Quality Management: Utilize air purifiers and UV sanitizers to reduce airborne transmission in shared environments.
- Stay Informed: Keep up with the latest guidance from health authorities regarding COVID-19 variants and seasonal flu trends.
The emergence of the NB.1.8.1 variant and early flu outbreaks serve as reminders that the respiratory illness landscape continues to evolve. Staying informed, adhering to preventive measures, and ensuring access to combo COVID and flu test kits are key components in managing the ongoing public health challenge.
For more information on COVID-19 and flu testing and vaccines, visit the CDC's official website: https://covid.cdc.gov/
Leave a comment