Asia Sees COVID-19 Surge: Waning Immunity and New Variants to Blame?

COVID-19 Cases Spike Across Asia

Over recent weeks, COVID-19 cases have been on the rise in several Asian countries, with Hong Kong, Singapore, and Thailand experiencing particularly significant increases. While India has seen a relatively mild uptick, health officials across the region are closely monitoring the situation.

Factors Driving the Surge

Singapore’s health ministry reports a sharp rise in cases, with the estimated number jumping to 14,200 in the week of April 27 to May 3, 2025, compared to 11,100 the previous week. Thailand has also seen a dramatic spike, with 33,030 cases between May 11 and May 17, including at least 6,000 in Bangkok. Hong Kong has witnessed an increase in its infection rate from 6.21% to 13.66% in just four weeks.

Several factors are believed to be contributing to this surge, including waning immunity in the population and the spread of new variants. In Singapore, authorities attribute the rise to the LF.7 and NB.1.8 variants, both descendants of the JN.1 variant that emerged in 2024. These new variants can spread more easily, particularly among high-risk groups like the elderly.

Hong Kong officials point to the fact that COVID-19 has become endemic, with periodic surges linked to changes in circulating strains and declining herd immunity. A similar trend could be at play in other countries.

India’s Situation

While India has seen a relatively mild increase in cases, health authorities are maintaining a vigilant stance. The Health Ministry is closely monitoring the situation and has put measures in place to protect public health. A recent review meeting involving experts from various health agencies was convened to assess the situation and ensure preparedness.

Looking Ahead

The rise in COVID-19 cases across Asia underscores the importance of continued vigilance and preparedness. Staying up-to-date with vaccinations and booster shots remains crucial, as does practicing preventive measures like handwashing and wearing masks in crowded areas.