The CDC today (27) announced three new locally transmitted dengue fever cases, constituting a family cluster. The index case is a man in his 60s from Gangshan District, Kaohsiung City, who developed fever, muscle aches, joint pain and nausea on August 26 and visited a clinic. As symptoms did not improve, he sought care at a hospital the same day; after reporting and testing, dengue fever was confirmed, with detection of dengue virus serotype 2. Among five cohabitants, two were confirmed with dengue fever after testing, also detecting dengue virus serotype 2. All three cases are currently hospitalized.
The CDC stated that the three cases had no travel history abroad during the incubation period, and their main activity area was near their homes. To identify hidden cases, health authorities have conducted expanded epidemiological investigations in the community and carried out emergency control measures around the residences of the confirmed cases, strengthening vector mosquito density surveys, source elimination, and health education, urging the public to cooperate with related control measures to prevent the spread of the outbreak.
CDC surveillance data show that, as of today in 2026, a total of 145 confirmed dengue cases have been reported nationwide, including 10 locally transmitted cases, all residing in Kaohsiung City; additionally, 135 imported cases were identified, with infection locations primarily in Southeast and South Asian countries such as Vietnam (28 cases), Indonesia (27 cases), and the Maldives (16 cases). The cumulative number of cases is lower than the same period in 2025 (154 cases).
The CDC reminds that heavy rains have occurred in many areas recently; after rainfall, water‑filled containers around homes increase dramatically, and the current temperature is favorable for mosquito activity and breeding. The public is urged to proactively inspect indoor and outdoor environments and eliminate breeding sites, implementing the “inspect, dump, clean, brush” approach, and to re‑inspect after rain to reduce vector mosquito density. When outdoors, wear light‑colored long‑sleeved clothing and use government‑approved insect repellents containing effective ingredients such as DEET, Picaridin, or IR‑3535. If fever, headache, retro‑orbital pain, muscle or joint pain, rash or other suspected dengue symptoms appear, seek medical care promptly and inform of travel history. Medical facilities should also stay vigilant, intensify questioning of patients about TOCC (Travel, Occupation, Contact, Cluster histories), and may use dengue NS1 rapid test kits to aid diagnosis and early reporting, facilitating timely public health response. For dengue‑related information, visit the CDC’s global website (https://www.cdc.gov.tw) view, or call the toll‑free epidemic prevention hotline 1922 (0800-001922) for inquiries.
Source: CDC
Data compiled by: Infection Control Office
