ENVIRONMENTAL HEALTH & SURVEILLANCE PROGRAM
Version 1.0 · Updated: 2026-02-01
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Thailand Soil Conditions & Pathogenic Risk Indicators

A research-driven analysis of agricultural soils to identify environmental conditions associated with the absence of World Health Organization (WHO) Fungal Priority Pathogen List (FPPL) taxa in Northeastern Thailand.

Overview

This website presents a research-driven analysis of agricultural soils in Northeastern Thailand, focused on identifying environmental conditions associated with the absence of fungal taxa listed in the World Health Organization (WHO) Fungal Priority Pathogen List (FPPL). Using soil metabarcoding data and machine-learning-based models, the study derives absence conditions, defined as combinations of environmental parameters under which specific FPPL taxa were not detected in sampled soils.

The purpose of this resource is interpretive rather than predictive. It summarizes what the data support, clarifies the limits of inference, and illustrates how absence-based environmental patterns may inform environmental monitoring or screening efforts, without implying causality, exposure pathways, or clinical risk. Findings are specific to Northeastern Thailand and are not intended to be generalized to other regions without additional validation.

Absence Conditions

This section summarizes model-derived environmental threshold rules associated with non-detection of WHO FPPL taxa found in agricultural soils from Northeastern Thailand.

Interpretation Guide

  • Each card corresponds to a single WHO FPPL fungal taxon.
  • Colored indicators denote categories of environmental variables.
  • Star symbols summarize model precision and recall.
  • “OR” denotes alternative sets of absence conditions.

Legend

★★★ Perfect test precision and recall
★★ High test precision and recall
★ Perfect test precision with moderate recall
Water / Moisture Variables Soil Chemistry Variables Nutrient Elements (N, P, K) Crop Type

High Priority WHO FPPL

Candida tropicalis
Crop type: not cassava Soil pH > 6.25
Curvularia lunata
Absence condition 1
Crop type: not sugarcane Crop type: not cassava
OR
Absence condition 2
Organic matter > 2.00
Falciformispora senegalensis
★★★
Soil pH ≤ 6.95 Water content ≤ 18.05%
Talaromyces marneffei
★★★
Soil pH > 5.10 Potassium > 0.50 Organic matter ≤ 3.00

Medium Priority WHO FPPL

Lichtheimia spp.
Phosphorus > 0.50
Mucor spp.
★★★
Potassium ≤ 1.50 Water content ≤ 30.26%
Rhizopus spp.
★★
Crop type: rubber tree Water content ≤ 21.61%

References

Key resources used in this study are listed below.