A new COVID-19 variant known as “ Cicada ” is starting to draw notice from health officials around the world. Its official name is BA.3.2, and it belongs to the Omicron family. Because this strain carries many mutations, experts are keeping a close watch on how it spreads.
COVID case counts remain fairly low in many areas. Even so, this variant has raised new interest because of how quietly it appeared. It got the nickname “Cicada” because, much like the insect, it seemed to stay hidden for a long time before showing up more often.
What is the Cicada COVID-19 variant?
Cicada is the nickname for BA.3.2, an Omicron subvariant. Scientists first identified it in South Africa in late 2024. It has a large number of mutations, especially on the spike protein, which the virus uses to attach to human cells.
Those changes may help the variant get around some protection from past infection or vaccination. Still, there is no sign so far that it causes more serious illness than other recent Omicron strains.
The name came from evolutionary biologist T. Ryan Gregory. He compared the variant to cicadas because it stayed mostly out of sight for quite a while before beginning to rise.
The CDC and WHO are both monitoring it. At this stage, it is not classified as a variant of concern, but health agencies are tracking it closely.
Where the Cicada Variant Is Spreading
So far, the Cicada variant has been detected in at least 23 countries. In parts of Europe, including Denmark, Germany, and the Netherlands, it has made up as much as 30% of recent cases.
In the United States, the CDC says it has turned up in at least 25 states through patient testing, traveler screening, and wastewater checks. Nationally, it still accounts for a small share of cases, about 0.55%, but that number has started to edge higher.
The first U.S. case was identified in June 2025 at San Francisco International Airport. The person had recently returned from the Netherlands. Since then, additional detections have appeared in both travelers’ and local samples.
Japan, Kenya, the UK, and parts of Australia have also reported cases. In most places, the increase has been gradual rather than sudden.
Has the Cicada Variant Reached Thailand?
As of March 28, 2026, Thailand has not publicly confirmed any cases of the Cicada variant, BA.3.2. The Ministry of Public Health and national surveillance systems have not reported any known detections.
Thailand’s Department of Disease Control is still carrying out routine genomic sequencing for COVID-19. At the same time, the National Vaccine Institute has addressed public confusion by explaining that “Cicada” is only a nickname for BA.3.2 and has no link to local insects. Officials also say current vaccines should still protect against severe illness from this strain.
Travelers entering Thailand from places where the variant has been found are advised to watch for symptoms and follow normal health guidance. Airports and hospitals still have testing capacity, and local data has not shown any spike connected to BA.3.2.
For people in Chiang Rai and elsewhere in Thailand, the current risk appears low. Still, basic hygiene habits remain a smart step during any respiratory virus season.
Symptoms of the Cicada Variant
Symptoms linked to the Cicada variant look much like those seen with other recent COVID strains. Most infections appear to be mild to moderate. Common symptoms include:
- Runny or blocked nose
- Sore throat
- Cough
- Headache
- Fatigue
- Fever or chills
- Congestion
- Sneezing
- Loss of taste or smell, though this is less common now
- Shortness of breath in some cases
- Stomach issues such as nausea or diarrhea
These symptoms often begin two to five days after exposure. For many people, especially those who are vaccinated, the illness feels similar to a cold or the flu.
As with other variants, older adults, people with weak immune systems, and those with underlying health issues face a higher risk of problems.
How Contagious Is Cicada, and Can It Get Around Vaccines?
BA.3.2 seems better able to spread among people who already have some immunity. Its spike protein mutations may make it harder for antibodies from earlier infection or vaccination to block it fully.
Even so, vaccines and boosters still appear to do a good job of preventing severe illness, hospitalization, and death. Right now, there is no evidence that Cicada leads to worse outcomes than other Omicron lineages.
The virus spreads mainly through respiratory droplets when an infected person coughs, sneezes, or talks. Risk goes up in crowded indoor places with poor airflow.
Wastewater monitoring has become an important early warning tool. In the U.S., it has picked up the variant in several states before case numbers rose clearly.
Should You Expect a New Surge?
At this point, health officials are not calling for alarm. Global case numbers remain relatively low, and hospitals are not reporting unusual strain tied to this variant.
Still, experts are watching for a possible summer increase, especially when travel picks up or people spend more time indoors together. Previous waves have shown that variants can spread more easily as immunity from earlier infections starts to fade.
The CDC and WHO continue to stress close monitoring. Genomic sequencing helps scientists spot changes early and respond faster.
In Thailand, authorities say the country remains ready. Public health teams have handled past waves before, and no special restrictions are currently in place. For now, officials recommend simple, practical steps during flu and COVID season.
Simple Ways to Protect Yourself and Your Family
There is no need to change daily life in a major way, but a few habits still help:
- Stay current on COVID boosters, especially if you’re over 65 or have other health risks.
- Take a test if you feel sick, especially before seeing older adults or anyone medically fragile.
- Wear a well-fitting mask in crowded indoor spaces if local cases begin to rise.
- Improve airflow at home or work by opening windows or using air purifiers.
- Wash your hands often and avoid touching your face.
- Stay home when you’re sick, so you don’t pass it to others.
Most mild cases improve with rest and over-the-counter symptom relief. If breathing gets harder, chest pain starts, or symptoms worsen, contact a doctor.
What Scientists Are Watching Next
Researchers want to learn whether Cicada will grow into a dominant strain or remain a smaller part of the mix. They are also studying whether it causes any unusual long-term effects, although nothing out of the ordinary has appeared so far.
Vaccine makers are also watching their mutations. If needed, updated shots could be adjusted to better match newer strains, much like seasonal flu vaccines.
Global data sharing still matters a lot. Platforms such as GISAID help researchers follow new variants in real time.
Final Thoughts: Stay Aware, Not Afraid
The Cicada variant is another reminder that COVID-19 is still changing. At the same time, vaccines, testing, and public health tracking give us far more protection than we had in 2020.
In Thailand and in other countries, the goal remains the same: to protect people at higher risk while allowing normal life to go on. For the latest updates, check trusted sources such as the Thai Ministry of Public Health, the CDC, or the WHO.
If symptoms show up, test early and get some rest. Most people still recover well at home.
