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What Is NB.1.8.1 Covid Variant That's Driving Fresh Rise Across 25 US States? Safety Precautions Amid Summer

Never COVID-19 varaint NB.1.8.1 sweeps 25 US states with the disease amid summer. Keep these precautions tips to protect your loved ones.

What Is NB.1.8.1 Covid Variant That's Driving Fresh Rise Across 25 US States? Safety Precautions Amid Summer

Written by Lothungbeni Humtsoe |Updated : July 16, 2025 1:39 PM IST

As the summer season arrives, fear of a surge in COVID-19 cases grips the local community of 25 United States.

The Center for Disease Control and Prevention (CDC) estimates that COVID-19 infections, notably the NB.1.8.1, the Nimbus strain, show no signs of declining or likely declining in 0 states, and not changing in 21 states.

And so far, the highest number of cases logged in are from California, Texas, Louisiana, Mississippi, Alabama, Florida, Kentucky, and Ohio, among others.

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What Is NB.1.8.1?

The World Health Organization (WHO) declares NB.1.8.1 as a SARS-CoV-2 variant under monitoring (VUM) with increasing proportions. The organization claims that this variant does not indicate any severity greater than other variants, and can be treated through the approved COVID-19 vaccines.

Signs And Symptoms Of NB.1.8.1

NB.1.8.1 is known for 'Razor Blades' sore throat. Individuals with the Nimbus variant experience a painful throat that feels like 'Razor Blades'.

"Symptoms of the sore throat are not from the virus itself," Chin-Hong, a professor at the University of California, San Francisco, told WebMD. "They are from the inflammatory reaction to the virus."

Reasons Behind The Summer Spike Of COVID-19

Generally, the summer spike of COVID-19 cases is fueled by summer holidays, indoor retreats in air-conditioned rooms, which allow more risk of virus transmission, and increased social gatherings to beat the heat.

"SARS-CoV-2 circulation in the United States has been meaningful year-round, but consistent peaks have occurred in late summer and winter since 2020," the CDC explains.

"Our analysis revealed biannual COVID-19 peaks in late summer and winter, a pattern that is expected to persist as long as the rapid evolution of SARS-CoV-2 and cyclical S1 diversity continues."

Safety Precautions Amid Summer

Although the summer wave of the new COVID-19 variant may have mild symptoms, it is crucial to remain safe from the Nimbus strain. Here are some essential tips for you to keep in mind amid the ongoing spread of the deadly COVID-19 variant.

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  • Wear a mask: Ensure to put on your mask whenever you're in a public setting like metros, trains, bazars, malls, hospitals and airports. "The virus can spread from an infected person's mouth or nose in small liquid particles when they cough, sneeze, speak, sing or breathe," WHO states.
  • Air circulation: While at home, ensure that your house is well ventilated to improve air circulation. Use your fans, open windows, and HEPA filter wherever you can.
  • Hygiene: Prioritise keeping your hands clean by washing with soap and water or using alcohol-based sanitiser.
  • Disinfect: Do not forget to disinfect contaminated areas.
  • Social distancing: WHO recommends staying at least 1 metre apart from others.
  • Vaccination: Lastly, do not forget to get an updated booster which matches the current variant.

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