ArgyroNikolouzou/lassa-gis-nigeria_dataset_of_cases_and_environmental_drivers
Domaine:
healthcaregeospatialType de record:
dataset
Créateur:
Arg
Hôte:
Multi-Layer GIS-Based Recording and Visualization of Lassa Fever Outbreaks in Nigeria: A Pilot Framework for Dynamic Susceptibility Mapping Based on Environmental Drivers
# Lassa Fever GIS Dataset – Nigeria
Dataset and methodology for analyzing the seasonality of the Lassa virus in Nigeria, combined with weather data and geographic characteristics.
## Data sources
- **Lassa fever cases (weekly time series, 2020–2025):**
ncdc-lassa-fever-timeseries-2020-2025
- **Cases by State / LGA (annual basis):**
NCDC Nigeria – Data
- **Population and population density by area:**
City Population – Nigeria
- **Weather data (daily → weekly average):**
Open-Meteo Historical Weather API
## Data structure
| Worksheet | Content |
|---|---|
| `Data from NCDC` | Annual cases by State and LGA (2020–2025), from Nigeria's official site. |
| `Nigeria Lassa` | Weekly cases (2020–2025), from Nigeria's official site. |
| `Open meteo parameters` | Description of each weather parameter, coordinates of the LGAs used to source weather data, and the values as weekly averages. |
| `Open meteo filter results` | Yearly average of weather parameters, separately for weeks with and without an outbreak. |
## Methodology
### 1. Analysis of weekly cases (2020–2025)
Basic statistics (e.g. average weekly cases) were computed for each year, and weeks of viral outbreak were identified. An outbreak threshold of **25 cases/week** was used, corresponding to the maximum value of the annual average (2024).
**Average weekly confirmed cases per year:**
| Year | Average |
|---|---|
| 2020 | 22.45 |
| 2021 | 9.82 |
| 2022 | 20.03 |
| 2023 | 24.44 |
| 2024 | 25.21 (maximum value) |
| 2025 | 21.32 |
**Weeks with more than 25 cases, per year:**
| Year | Weeks |
|---|---|
| 2020 | 2–12 |
| 2021 | 8, 10, 11, 51, 52 |
| 2022 | 1–11 |
| 2023 | 1–12, 51, 52 |
| 2024 | 1–11, 48–52 |
| 2025 | 1–12 |
### 2. Identification of high-incidence areas (LGAs)
For each year (2020–2025), the local government areas (LGAs) with more than 10 cases annually were identified from Nigeria's official site.
**LGAs with the most cases, per year:**
- **2020:** Owo, Akure South, Akoko, Ose, Etsako West, O …