Combating Mosquitoes Through Scientific Data
- Ulsan Nam-gu Establishes “Data-Based Scientific Quarantine System” -

Ulsan Nam-gu (Mayor Dong-wook Seo) is fully operating a “data-based scientific quarantine system” that analyzes the current status of mosquito outbreaks using scientific data and responds preemptively.

In a situation where the timing and density of mosquito outbreaks are changing due to recent climate change, it is expected that residents will be able to feel actual changes through accurate quarantine activities based on data.

Nam-gu announced on the 21st that it will establish a “tight quarantine network” that can quickly respond according to the mosquito outbreak patterns and living area characteristics shown by scientific data, and will begin precision quarantine.

To this end, three major strategies were established: data-based scientific quarantine system, organic collaboration system between departments, and resident-felt, life-friendly quarantine system.

First, it will promote “selective and concentrated quarantine” by comprehensively analyzing quarantine-related data such as Daily Mosquito Surveillance (DMS) equipment, Pest Control Geographic Information System, GIS/Q-Field spatial information analysis, analysis of civil complaint occurrence status, and septic tanks.

It is expected that accuracy will increase in the process of selecting the quarantine time and area, while simultaneously improving the field work management system and establishing a data-based quarantine system.
Collaboration between departments was also systematized for precise preliminary analysis of areas vulnerable to quarantine.

A response system integrating quarantine, field, and information management functions into one was established, such as joint inspection of septic tank status, rivers, and rainwater pipes, and construction of misconnected sections (Construction Division), sharing of GIS-based Q-Field (web/app) data (Land Information Division), and identifying small-scale civil complaints and supporting field responses (Administrative Welfare Center).

To allow residents to feel actual changes in their daily lives, larvicide quarantine has been conducted since last winter on septic tanks and covered rivers, which are the main habitats of larvae.

In addition, ahead of the summer season, regular quarantine of multi-use facilities including parks and senior citizen centers will be conducted, as well as larvicide in vulnerable areas such as septic tanks, drains, and around rivers, nighttime quarantine in residential areas during the summer, and precise and customized quarantine by region according to the frequency of mosquito outbreaks.

A customized quarantine system using eco-friendly quarantine equipment such as DMS (10 units), mosquito traps (11 units), electric insect killers (219 units), and repellent sprayers (42 units) will be operated, and a resident autonomous quarantine group (90 people) and a QR code-based quarantine civil complaint receipt system will also be operated at all times.

Previously, as a result of conducting data-based quarantine last year, Nam-gu saw a 34% decrease in the number of quarantine civil complaints from 837 cases in 2024 to 555 cases last year, and the amount of mosquitoes captured by Daily Mosquito Surveillance (DMS) equipment also decreased by 66% from 155,279 to 52,658.

Based on these achievements, the plan is to solidify the quarantine system through field prediction, preemptive quarantine, and departmental collaboration this year as well.

A Nam-gu official said, “We will promote tight quarantine activities everywhere in the region so that residents can live in a pleasant environment,” urging, “We ask residents to actively participate in environmental maintenance, such as eliminating stagnant water in empty flower pots or plastic bottles around their residences.”