Vietnam’s Ministry of Health is closely monitoring a new SARS-CoV-2 subvariant, known as BA.3.2 - or informally dubbed the “cicada” variant - as it quietly spreads across the United States and multiple countries worldwide.

According to updates from the World Health Organization (WHO) and the US Centers for Disease Control and Prevention (CDC), BA.3.2 has been classified as a “variant under monitoring”. Current assessments place its public health risk at a low level compared to other circulating Omicron lineages.

A variant with notable mutations

First identified in South Africa on November 22, 2024, BA.3.2 has attracted scientific attention due to a large number of mutations, particularly on the spike protein - the mechanism the virus uses to enter human cells.

Laboratory data suggest the variant may exhibit changes in antigenic properties and an enhanced ability to evade immune responses. However, there is currently no evidence indicating that BA.3.2 leads to more severe illness, higher hospitalization rates or increased mortality.

Health experts also emphasize that existing Covid-19 vaccines continue to provide effective protection against severe disease and death.

Global presence continues to grow

As of early 2026, the BA.3.2 variant has been detected in at least 23 countries, including Japan, Australia, Germany and several European nations. In the United States alone, it has been reported in at least 25 states, according to the CDC.

Despite its expanding footprint, the variant’s impact remains limited, with no significant changes observed in clinical outcomes.

Preparedness without panic

In response, Vietnam’s Ministry of Health has reaffirmed its commitment to closely tracking global developments and circulating variants. The preventive health system, medical facilities and relevant agencies have been instructed to maintain surveillance, ensure early detection and assess risks in a timely manner.

Authorities stress that while the public should not panic, complacency must also be avoided.

People are encouraged to monitor their health, maintain good personal hygiene and seek medical attention if symptoms arise. Special attention is advised for high-risk groups, including the elderly, individuals with underlying conditions, pregnant women and those with weakened immune systems.

A familiar lesson in an evolving pandemic

The emergence of BA.3.2 serves as a reminder that the Covid-19 pandemic continues to evolve, even as its immediate threat appears to have eased.

For health authorities, the challenge lies in balancing vigilance with stability - ensuring readiness without fueling unnecessary concern.

And for the public, the message remains unchanged: stay informed, stay cautious, and trust in the systems designed to respond when needed.

Phuong Thuy