# Global and regional infectious disease trends

> Live situation record from CLSTR: https://clstr.news/situations/global-and-regional-infectious-disease-trends
> Updated: 2026-09-17T06:05:57.000Z. Sources: 13. Developments: 2.

Global infectious disease trends have shown rising influenza cases, particularly in the Southern Hemisphere and across Asia, including China, India, and Southeast Asia. Concurrently, COVID-19 cases have increased in Hong Kong, Singapore, and India due to the PQ.16.1.1 Omicron subvariant, which exhibits increased immune evasion.

By mid-September, the influenza surge continued in Southeast Asia. Indonesia reported a rise in Influenza A, leading to increased hospital admissions and crowded emergency departments in cities such as Bandung and Surabaya. The Indonesian Pediatric Society noted a significant surge in pediatric cases. While the Indonesian Ministry of Health described the situation as seasonal and under control, medical professionals highlighted risks of severe complications like pneumonia for vulnerable groups.

## Timeline

### 2026-09-17: Indonesia sees rise in influenza cases amid regional surge

Indonesia and Southeast Asia are seeing a rise in influenza A cases, particularly among children. Health officials urge vaccination and monitoring as hospital emergency departments face increased demand.

7 sources. https://clstr.news/cluster/influenza-a-virus-causes-rise-in-respiratory-infections

### 2026-08-27: Global infectious disease trends show rising influenza and COVID-19 cases

Global health reports indicate rising influenza and COVID-19 cases in Asia and the Southern Hemisphere, alongside major Ebola outbreaks in Congo and dengue fever surges in Southeast Asia.

6 sources. https://clstr.news/cluster/global-infectious-disease-trends-show-rising-influenza-and-covid-19-cases

---
Cite as: Global and regional infectious disease trends. CLSTR, https://clstr.news/situations/global-and-regional-infectious-disease-trends