New COVID-19 Variant ‘Cicada’ (BA.3.2): Global Spread, Vaccine Protection, and What It Means for India

A new COVID-19 variant is once again drawing global attention, reminding everyone that the virus hasn’t completely faded away. Known as BA.3.2 and informally called the “Cicada” variant, this strain has started appearing across multiple countries, including the United States. While there is no immediate cause for alarm, health experts are carefully monitoring its behaviour as it continues to evolve.

What is the Cicada Variant?

BA.3.2 is a distinct strain of the coronavirus, not just a minor variation of previously circulating ones. It differs from earlier dominant variants like JN.1 and has developed a unique genetic profile. What makes this variant particularly noteworthy is the unusually high number of mutations it carries—around 70 to 75 mutations in its spike protein.

The spike protein is the part of the virus that allows it to enter human cells, and such a high number of changes raises concerns about how the body’s immune system might respond. Scientists believe this could give the variant some level of “immune escape,” meaning it may partially bypass immunity from past infections or vaccines.

Researchers have also identified sublineages—BA.3.2.1 and BA.3.2.2—indicating that the variant is still actively evolving.

Why is it Called the “Cicada” Variant?

The nickname “Cicada” reflects the way this variant emerged. Much like cicadas that stay hidden underground before suddenly appearing, BA.3.2 remained under the radar for some time before being detected more widely through traveller screenings, clinical testing, and wastewater surveillance systems.

Where Has the Variant Spread?

The Cicada variant was first identified in South Africa in November 2024 and has since been detected in more than 20 countries. Early spread was observed across parts of Europe, including Denmark, Germany, and the Netherlands.

The United States has become one of the key regions where the variant is being closely tracked. It has been detected in several states, including California, Florida, New York, Texas, New Jersey, Illinois, Pennsylvania, and Virginia, with presence confirmed in around 25 states through testing and wastewater monitoring.

Despite this global spread, BA.3.2 is still part of a broader mix of circulating variants, with others continuing to account for a large share of infections.

Symptoms to Watch For

Current data suggests that the symptoms of the Cicada variant are largely similar to those seen in recent COVID-19 strains, though a few patterns stand out.

A severe sore throat is being reported more frequently than usual. Additionally, some individuals have experienced headaches that extend toward the jaw or teeth, causing toothache-like discomfort, which is being noted as a slightly unusual presentation.

Other commonly reported symptoms include:

• Fever or chills
• Dry cough
• Fatigue and body aches
• Headache
• Runny or blocked nose
• Loss of taste or smell
• Nausea, vomiting, or diarrhoea
• Shortness of breath in more serious cases

Symptom severity can vary depending on factors such as immunity levels, age, and existing health conditions.

What About India?

As of now, there is no confirmed widespread transmission of the Cicada variant in India. However, given how quickly variants can spread globally, health authorities are maintaining close surveillance. Monitoring systems are focused on international travellers, local case trends, and genomic sequencing to detect any early signs of its presence.

Do Vaccines Still Work?

One of the biggest concerns with any new variant is vaccine effectiveness. At present, no vaccine has been specifically designed for BA.3.2. However, global health experts believe that existing vaccines are still likely to provide strong protection against severe illness, hospitalisation, and death.

While the high number of mutations may reduce protection against infection to some extent, booster doses continue to play an important role in maintaining immunity. The primary goal remains preventing serious outcomes rather than completely stopping infection.

Precautions to Follow

Even with new variants emerging, basic preventive measures remain effective and important:

• Wear masks in crowded or poorly ventilated spaces
• Wash hands regularly and maintain hygiene
• Avoid close contact with people who are unwell
• Stay home if you experience symptoms
• Keep vaccinations and booster doses up to date
• Ensure proper ventilation in indoor spaces.