A new COVID-19 variant named KP.3 has rushed to power in the United States, according to current data from the Centers for Disease Control and Prevention (CDC).1

As of June 8, KP.3 accounted for 25% of patients, per the CDC. The variant has reached the last chief variant, KP.2, which now produces up to about 22% of patients. Both have struck down JN.1, the top stress airing this past winter.

With SARS-CoV-2, the virus that drives COVID, mutating always, it’s realistic to be involved each time a new variant rises to dominance. 

Here’s what you need to know about KP.3, including whether specialists are anxious about its quick stretch.

What Is KP.3?

KP.3 is part of a recently recognized group of variants anointed “FLiRT,” which are parts of SARS-CoV-2’s Omicron family. In complement to KP.3, the FLiRT variants also have KP.2 and KP.1.1. They all fall from JN.1.2

KP.3 is equal to JN.1 in its design but for two shifts in the end protein, Carlos Zambrano, MD, a board-certified infectious illness doctor and the director of the COVID-19 Task Force at Loretto Hospital in Chicago, told Health.

The point protein is found on the virus’s surface and reduces its entrance into human cells.

“One change was observed in the XBB.1.5 lineage, which was dominant in 2023,” he said. “The second difference was kept in viruses spreading in 2021.”

Why Is KP.3 Interested in So Many Cases?

According to C. Leilani Valdes, MD, a pathologist and medical manager at Regional Pathology Associates in Victoria, Texas, the KP.3 variant has become the frontrunner because it applies fast and easily. 

It is “very good at hopping from one individual to another,” she stated. “This suggests more individuals are getting contaminated with KP.3 reached to other variants.”

Does KP.3 Cause More Intense Condition Than Other COVID Strains?

Both specialists decided that there is currently no obvious proof that KP.3 generates more intense illness than other stresses, including the JN.1 strain or its products. As such, individuals who contract KP.3 can hope to share signs typical of other recent COVID variants.

“KP.3 signs reach typical COVID-19 signs, including fever, cough, tiredness, and failure of taste or smell,” Valdes said. “Some people may also participate with a sore throat, headache, or muscle pain.”

Are COVID Cases Climbing?

“COVID issues are on the rise, and we can anticipate the number of cases to resume to grow, particularly with the KP.3 variant circulating fast,” Valdes said. 

The CDC said last week that COVID-19 conditions are “developing or likely rising in 30 conditions and habitats.” Chances are “tough or insecure” in 18 others and are likely falling in one—Oklahoma

Do Vaccines Save Against KP.3?

Per Zambrano, all three COVID-19 vaccine works—Pfizer, Moderna, and Novavax have said that their new vaccines slated for August 2024 will target the JN.1 variant.

Because the JN.1 variant is nearly connected to the FLiRT variants, specialists have said that reaching the vaccines to JN.1 will offer more suitable security.

Valdes worried that vaccination stays “one of the most useful tools” against COVID. “Waiting up to date with champion shots greatly decreases the chance of extreme illness and hospitalization,” she stated. “Modeling masks, cleaning hands, and maintaining distance from others can help stop the space.”

“The most necessary takeaway as we run into the summer is that KP.3 spreads smoothly,” she counted, “so it’s significant to be thorough.”


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