Key Takeaways
- Asia faces new COVID-19 surge as countries like Singapore, Hong Kong, China, and Thailand report rising cases linked to Omicron subvariants.
- The LF.7 and NB.1.8 variants, both tied to JN.1, are driving the majority of infections but do not appear to be more severe.
- Waning immunity, increased mobility, and post-festival gatherings are contributing factors behind the surge.
- Those with chronic illnesses, the elderly, and those with impaired immune systems continue to be the most vulnerable.
- Most infections are mild, resembling the flu, with few complications and stable healthcare system responses.
COVID-19 Resurgence in Asia: A Wake-Up Call, Not a Panic Button
A fresh wave of COVID-19 is sweeping across parts of Southeast and East Asia, reigniting public concern even as most countries have transitioned to treating the virus as endemic. Singapore, Hong Kong, China, and Thailand are among the nations seeing a notable uptick in infections, driven largely by new Omicron subvariants and declining population immunity.
While authorities are not signaling alarm, the data points to a significant regional resurgence that warrants public awareness, especially among vulnerable populations.
Singapore: A 28% Spike Amid Waning Immunity
Singapore has reported a 28% increase in COVID-19 cases over the past year, with over 14,200 cases documented as of early May. Health officials attribute the rise primarily to the waning immunity of the population, rather than a sudden shift in the virus’s nature.
The dominant strains in circulation—LF.7 and NB.1.8—are subvariants of JN.1, an Omicron offshoot. These variants now account for more than two-thirds of reported cases. The Ministry of Health emphasizes that most infections are mild and manageable, resembling seasonal flu more than the severe disease patterns seen in early pandemic years.
Hong Kong: Test Positivity Jumps as Severe Cases Rise
In Hong Kong, the numbers paint a more concerning picture. The percentage of respiratory samples testing positive for COVID-19 has jumped from 1.7% in March to over 11% in early May, surpassing the peak seen in August 2024.
The city also recorded 31 severe cases in just one week—the highest number in the past year. Most cases are tied to reduced post-infection immunity and not an especially virulent strain. Symptoms being reported include not only classic respiratory issues like cough and sore throat, but also nausea, vomiting, brain fog, and even conjunctivitis.
China: Rising Positivity Mirrors Last Year’s Peak
China, too, is facing a spike in COVID-19 cases, with positivity rates more than doubling in recent weeks. Though the current situation is not as severe as earlier waves, the rise is seen as a clear sign of a renewed viral cycle. Public health agencies have not reported a significant increase in hospitalizations, but the trajectory is being closely monitored.
Thailand: Songkran Festival Sparks Post-Holiday Wave
In Thailand, the surge in COVID-19 cases appears to have followed the Songkran festival in April, a period marked by mass gatherings and extensive domestic travel. Deaths rose modestly, from two to five, in the same period.
The dominant variant remains JN.1, responsible for around 65% of cases. While the healthcare system remains stable, officials are advising caution during future festivals and crowded public events.
The Variant Landscape: JN.1 and Its Offshoots
What’s driving this latest wave? Experts point to the evolution of the Omicron family, particularly the JN.1 subvariant and its relatives LF.7 and NB.1.8. These strains are not significantly more transmissible or deadly than their predecessors, but their ability to evade immunity appears to be increasing.
Because many individuals were last vaccinated over a year ago or have not received updated booster doses, immunity gaps are providing fertile ground for viral spread—even if symptoms remain mild in most cases.
Who Is Most at Risk Right Now?
Though the general population remains relatively safe—especially those who are vaccinated and in good health—there are certain groups at elevated risk:
- People aged 60 and older
- Individuals with underlying health conditions (e.g., diabetes, cardiovascular disease)
- Immunocompromised patients
- Those who haven’t received recent booster shots
For these groups, health experts strongly recommend updated vaccinations to reduce the chances of severe illness or hospitalization.
Symptoms of the Current COVID-19 Wave
This wave’s symptom profile is very similar to that of the seasonal flu. Here’s what to watch out for:
- Persistent cough
- Sore throat
- Nausea and vomiting
- Brain fog or difficulty concentrating
- Eye irritation, including conjunctivitis
Fortunately, most cases do not require hospitalization, and symptoms typically resolve within a week.
How Are Health Systems Responding?
Across the affected countries, healthcare systems remain well-equipped to manage the surge. Hospitals are not overwhelmed, and intensive care unit occupancy remains low. Government agencies are focused on public education, vaccination outreach, and monitoring, rather than imposing new lockdowns or restrictions.
In short, while the numbers are rising, panic is not the appropriate response—preparedness is.
Recommendations from Health Authorities
Public health officials across Asia are offering the following guidance:
- Vaccinations and Boosters: If it’s been more than 12 months since your last dose, consider getting a booster, especially if you fall into a high-risk group.
- Hygiene and Masks: Continue practicing good hand hygiene and wear a mask in crowded indoor spaces.
- Stay Home if Sick: Avoid going out if you’re experiencing flu-like symptoms to prevent further spread.
- Avoid Crowded Events: Particularly if you’re immunocompromised or elderly.
Should You Be Worried About This Wave?
For the average healthy individual, there is no cause for alarm. The current wave is more comparable to a seasonal flu surge than the severe outbreaks of 2020–2021. Still, for those at higher risk, it’s important to take the necessary precautions, including staying up to date on vaccinations and being mindful in crowded settings.
Conclusion: A Reminder, Not a Red Alert
Although it is a reminder, the most recent COVID-19 outbreak in Asia is not a crisis. COVID-19 is now part of our seasonal disease landscape, and occasional surges will likely continue. What’s important is not just how many people get infected, but how well communities respond, how health systems manage cases, and how informed individuals are about protecting themselves and others.
As long as the virus remains in circulation, staying alert, not anxious, remains the most reasonable approach.
