Uncovering the symptoms of COVID variant XEC: What you need to know

Similar to other seasonal viruses, the SARS-CoV02 virus that causes COVID-19 continues to mutate and spread, particularly during the colder winter months. This year, several new mutations of the Omicron strain are spreading globally.

The FLiRT variants KP3.1.1 and KP. 3 are the most widely circulating strains of COVID-19 as of August 2024. According to the Centers for Disease Control and Prevention (CDC), the KP3.1.1 variant is now the most widely circulating, making up about 43% of new COVID-19 cases in August. However, as of mid-September, a newer variant called XEC is on the horizon and may surpass KP3.1.1 as the winter months approach.

What can you expect from these new variants? Are the symptoms of the new Covid variant more severe than previous strains? What steps can you take to stay healthy during the cold and flu season this year?

Key differences between COVID variant XEC and previous strains

The new strains of COVID that were circulating over the summer were collectively known as FLiRT. They include the KP2 variants and KP3 variants, which are subvariants of the Omicron strain. But, more recently, the XEC strain, also a variant of the Omicron strain, is expected to surpass the FLiRT variants.

Their spike proteins differ slightly from previous strains. The new COVID variants don’t appear to be more severe than previous strains but are likely more contagious or better at evading the immune system.

XEC variant COVID symptoms

The new COVID variant symptoms are similar to those of previous strains, including:

Congestion
Cough
Diarrhea
Fatigue
Fever and chills
Headaches
Loss of taste or smell
Muscle soreness and aches
Nausea
Shortness of breath
Sore throat
Vomiting

There is no indication that any new COVID-19 variants including KEX, KP2 or KP3 are causing any different symptoms. The virus will continue to evolve. At this time, it appears less severe but more contagious and better at evading any existing immunity than previous strains.

XEC variant FAQs

Here are some frequently asked questions about the new COVID strains.

How long is the new COVID variant contagious?

Similar to previous strains, most people with COVID-19 can resume normal activities once they have been symptom-free for 24 hours. If you prefer to be more cautious, you can wear a mask for up to 5 days after an infection. Depending on the severity of your symptoms, further isolation or testing might be recommended to ensure you are no longer contagious.

How long after exposure to the new COVID variant do symptoms appear?

Symptoms typically appear between two to 14 days after exposure to the new variant and last up to two weeks.

Who is most at risk of the new COVID strain?

The new COVID strain appears to be better at evading immunity from a previous infection or vaccine. Therefore, most people are at risk of infection if exposed. Those who are elderly or immune-compromised are more likely to experience severe disease.

How do I know which COVID variant I have?

You likely will not know which COVID variant you have, as standard COVID testing does not identify specific strains. Since symptoms are similar between variants, the treatment you may require does not vary depending on the strain.

Are home COVID tests still reliable?

Yes, at-home COVID tests are reliable but may not detect an early infection. If you believe you have COVID but have tested negative, it is recommended that you repeat the test after 48 hours.

Visit urgent care centers for new variant testing

During this winter season, many viruses are circulating, including RSV, the flu and COVID-19. Strep throat can also cause symptoms similar to those of these viruses, although it is not a viral infection. Unfortunately, you can have multiple viruses at once, which could make you feel awful.

If you are experiencing symptoms of COVID-19 or another virus and want to confirm the diagnosis or get treatment options, start by finding the center nearest you. We offer rapid and other COVID-19 testing options at all our urgent care centers.

Once you locate your closest center, just walk in or save your spot online. If you are unsure if you need an in-person visit, schedule a virtual visit with one of our knowledgeable providers.

We look forward to helping you feel better soon!

References:

By Sarah Thebarge, Physician Assistant

Medically reviewed by J.D Zipkin, MD, MA, FAAP