Understanding host–pathogen interactions remains central to preventing, diagnosing, and treating infections, particularly as antimicrobial resistance and emerging parasites challenge health systems worldwide. This Collection assembles rigorously peer-reviewed, step-by-step protocols that advance experimental research across medical parasitology and infectious diseases, while enabling the systematic evaluation of both modern and traditional therapeutic approaches under robust scientific standards.

Contributions will span in vitro and ex vivo culture systems (parasites, vectors, and clinically relevant pathogens), mammalian cell lines and organoids, ethically compliant in vivo models, and state-of-the-art readouts, including molecular diagnostics (qPCR/dPCR), microscopy and live-cell imaging, multi-omics (proteomics, metabolomics), immune profiling, and validated bioassays for efficacy, cytotoxicity, and mechanism-of-action. Submissions addressing good laboratory practice, biosafety, quality control, statistical power, and reproducibility checklists are especially encouraged.

Therapeutic content will emphasize standardized characterization of interventions—small molecules, biologics, vaccines, and natural products—covering extraction/processing, chemical or proteomic profiling, dosing paradigms, toxicity, pharmacodynamics, and potential synergy with standard-of-care regimens. Troubleshooting notes, common pitfalls, and cost-conscious alternatives suitable for resource-limited settings are welcome to enhance transferability.

By harmonizing methods across disciplines, this Collection aims to reduce experimental variability, accelerate translational insight from bench to bedside, and foster practical training for early-career and established investigators alike. The resulting compendium will serve clinicians, bench scientists, and public health laboratories seeking robust, reproducible workflows to interrogate pathogen biology and to evaluate modern and traditional therapeutic strategies with scientific rigor.