Taiwan Confirms Dengue Cluster in Kaohsiung City

During the first half of the 20th century, there were three island–wide dengue fever outbreaks in the Republic of China's Taiwan. In 2015, Taiwan battled one of the most severe dengue outbreaks in history with over 43,000 dengue cases, including 228 related fatalities.

Based on new data from the Taiwan Centers for Disease Control (TCDC), four confirmed cases of dengue type 2 have been reported in Gushan District, Kaohsiung City. These individuals are receiving treatment at a local hospital.

According to CNA reporting on August 25, 2025, positive breeding sources were detected at the cases' residences. Additionally, the confirmed cases had no recent record of travel abroad. The TCDC judged that all cases were local and that it was a community cluster event.

The TCDC reminds everyone that it is currently dengue fever season, and recent rainfall has increased the population of mosquitoes that carry the virus.

To alert international travelers of this global health risk, the U.S. CDC reissued its Level 1 Travel Health Advisory on August 21, 2025. While the CDC listed various countries, it did not include Taiwan.

From a disease prevention perspective, several countries in the Asia-Pacific region offer a second-generation dengue vaccine that has been found effective against type 2 virus infections.