GIS-Based Disease Surveillance · San Fernando City, La Union

LIGTAS

Location-Integrated GIS Tool for Area Surveillance System

A geographic-information surveillance system developed for the City Health Office to track, map, and respond to seven notifiable diseases across all 59 barangays of San Fernando City, La Union. Real-time case reporting, household-level pinpointing, automated outbreak detection, and five years of trend analytics — all in one place.

Diseases Monitored

All seven are notifiable conditions under the Philippine Integrated Disease Surveillance and Response (PIDSR) system.

HFMD
Hand, Foot & Mouth Disease
Dengue
Dengue Fever
Measles
Measles (Rubeola)
AWD/AGE
Acute Watery Diarrhea / Gastroenteritis
Typhoid
Typhoid Fever
Chikungunya
Chikungunya Virus Infection
Leptospirosis
Leptospirosis

Core Features

Every feature was built to support real epidemiological workflows used by the City Health Office.

GIS Surveillance Map

Real barangay polygon boundaries with risk-zone color coding. Cases shown as sunflower patterns around centroids; toggle between Street, Satellite, and Dark base maps.

Household Pinpointing

Patients drop a precise lat/lng pin on their residence when reporting. CHO investigators can correct pins with mandatory reasons; every change is audit-logged.

Outbreak Alert System

Automated detection when a barangay crosses the case threshold. Real-time push notifications to CHO and Admin dashboards, with severity tiers.

Trend Analytics

Five-year historical data, weekly and monthly comparison charts, top-affected barangays, and year-over-year case curves per disease.

Case Assessment Workflow

CHO investigators classify cases as Suspected, Confirmed, or Negative; assign isolation periods; and capture clinical notes — all linked to the patient's record.

Audit Trail

Every pin correction, status change, and admin action is permanently logged with the user, timestamp, and reason. CSV-exportable for accountability.

Weekly Morbidity Reports

Generate DOH-formatted PDF reports with embedded charts, barangay tables, and case lists — ready for submission to the regional health office.

Three-Role Access

Patients self-report; CHO officers investigate and assess; Admins manage users and oversee system-wide audit logs. Role-based permissions throughout.

Searchable Glossary

150+ disease, clinical, epidemiology, and public-health terms with live search and category filtering — for staff training and public reference.

LIGTAS in Numbers

7
Notifiable Diseases
Tracked
59
Barangays Mapped
with Real Boundaries
3
User Roles
(Patient · CHO · Admin)
5
Years of
Historical Data
Data Privacy & Confidentiality

LIGTAS is built in compliance with Republic Act 10173 (Data Privacy Act of the Philippines). Patient information is used exclusively for disease surveillance by the City Health Office and is never shared with third parties without consent. Public dashboards display only aggregate, anonymized data — no personally identifying information is exposed beyond the patient and their assigned CHO investigator.

Developed As An Undergraduate Capstone Project

LIGTAS was designed and developed in partnership with the City Health Office of San Fernando City, La Union to address the operational challenges of manual, paper-based disease surveillance. The system replaces fragmented spreadsheets and physical case logs with a unified, map-driven, multi-user platform tailored to the workflows of City Health Officers, investigators, and the residents they serve.

FOURFECT
Development Team
Luigi presenting
Meet your Partner

Luigi

Your friendly LIGTAS guide — always ready to help.

Luigi is the official mascot of the LIGTAS system. Designed to make disease surveillance feel approachable, Luigi guides patients through case reporting, reminds CHO officers of pending cases, and pops up with helpful tips throughout the system. He's always wearing his shield — because protecting the community is what LIGTAS is all about.

Luigi thumbs up Luigi analytics Luigi with GIS map Luigi on alert Luigi writing

Luigi has 18 poses — each one for a different moment in the LIGTAS workflow.

Meet the Developers

The team behind LIGTAS — BSIT students from DMMMSU-MLUC passionate about using technology for public health.

Developer 1
1
Developer 2
2
Developer 3
3
Developer 4
4
FOURFECT
4 developers · BSIT — Business Analytics · DMMMSU-MLUC
Need to reach the City Health Office?

For health emergencies, case follow-up, or system questions, contact the City Health Office of San Fernando City, La Union directly. Full contact details are listed in the footer below.

LUIGI
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Hi! I'm LUIGI, your LIGTAS partner. Click me for tips! 👋
LUIGI
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Your LIGTAS Guide & Partner
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System Guide
Step-by-step how to use LIGTAS
LUIGI
Frequently Asked Questions
Common questions about LIGTAS
What is LIGTAS?
LIGTAS (Location-Integrated Geographic Tracking and Surveillance System) is a GIS-based disease surveillance system for the Community Health Office of San Fernando City, La Union.
Who can use LIGTAS?
LIGTAS has three portals: Patient (for residents to view their cases), CHO (for health officers to manage cases), and Admin (for system administrators and report generation).
What diseases does LIGTAS monitor?
LIGTAS monitors all notifiable diseases as defined by the DOH, including HFMD, Dengue, Measles, AWD/AGE, Typhoid, Chikungunya, and Leptospirosis.
How do I read the GIS map?
The map uses color intensity (choropleth) — the darker the color, the higher the number of cases in that barangay. No color means no cases.
How do I report a disease case?
Only CHO health officers can encode cases. If you are a patient, you can check your case status after it has been encoded by the CHO.
Is my health data safe?
Yes. LIGTAS follows the Data Privacy Act of 2012 (RA 10173). Your personal health information is kept strictly confidential.
How is the risk level determined?
Barangays are classified as Low Risk (1-7 cases), Moderate Risk (8-14 cases), or High Risk (15+ cases) based on their total case count.
What does the "Verify Later" option mean?
In emergencies, patients can be registered without verifying their mobile number. Unverified accounts cannot receive SMS updates until verified.
LUIGI
Hi, I'm LUIGI!
Location-Integrated Guide & Information
Your LIGTAS Partner 💙
Who is LUIGI?
I'm the official guide mascot of LIGTAS. I'm here to help patients, health officers, and administrators navigate every part of the system — from reading the GIS map to generating PDF reports.
About LIGTAS
LIGTAS (Location Intelligence for Geographic Tracking and Surveillance of Communicable Diseases) is a GIS-based disease surveillance system built for the City Health Office of San Fernando City, La Union.

It monitors 7 notifiable diseases across 59 barangays and serves three user roles: Admin, CHO Officer, and Patient.
Diseases Monitored
HFMD Dengue Measles AWD/AGE Typhoid Chikungunya Leptospirosis
Developed By
Capstone Project — DMMMSU
Don Mariano Marcos Memorial State University
Built in collaboration with the City Health Office of San Fernando City, La Union as a thesis capstone project.
LIGTAS v1.0 — 2026
Data Privacy Act of 2012 (RA 10173) Compliant
Keeping San Fernando City Safe, One Case at a Time.