TraitMech

TraitMech › ECOLOGY

biosafety level

METPO:1001101 · CLASS · REVIEWED

A quality that categorizes biological agents according to their hazard level and required containment measures.

Biosafety-level hazard-classification axis

DOI-backed graph framing biosafety level as a hazard-based classification driven by pathogen transmissibility, disease severity, and availability of countermeasures, with `is a` edges to the BSL-1 through BSL-5 child classifications.

Biosafety-level hazard-classification axis Interactive directed graph showing evidence-backed causal relationships for biosafety level.

Edge evidence

  • pathogen hazard properties causes biosafety level biolink:causes

    Pathogen transmissibility, severity, and treatability jointly determine biosafety-level classification.

    • DOI:10.1146/annurev.micro.62.081307.162938 virulence factors Supports pathogen virulence properties as the biological inputs for hazard-level classification.
  • biosafety level mandates containment requirements

    Each biosafety level mandates specific containment practices and engineering controls.

    • DOI:10.1146/annurev.micro.62.081307.162938 pathogenesis Supports pathogen pathogenesis as the basis for graduated containment requirements.
  • biosafety level 1 is a biosafety level rdfs:subClassOf

    BSL-1 is a biosafety-level classification.

    • DOI:10.1146/annurev.micro.62.081307.162938 host Supports the host-pathogen framing underlying hazard classification, including the minimal-hazard BSL-1 tier.
  • biosafety level 2 is a biosafety level rdfs:subClassOf

    BSL-2 is a biosafety-level classification.

    • DOI:10.1146/annurev.micro.62.081307.162938 infection Supports community-acquired infection as the hazard profile underlying the BSL-2 tier.
  • biosafety level 3 is a biosafety level rdfs:subClassOf

    BSL-3 is a biosafety-level classification.

    • DOI:10.1146/annurev.micro.62.081307.162938 pathogen Supports serious-pathogen severity (aerosol-transmissible disease) as the hazard profile underlying the BSL-3 tier.
  • biosafety level 4 is a biosafety level rdfs:subClassOf

    BSL-4 is a biosafety-level classification.

    • DOI:10.1146/annurev.micro.62.081307.162938 toxins Supports extreme-toxicity and untreatable-pathogen profiles as the hazard basis for the BSL-4 tier.
  • biosafety level 5 is a biosafety level rdfs:subClassOf

    BSL-5 is a proposed biosafety-level classification beyond BSL-4.

    • DOI:10.1146/annurev.micro.62.081307.162938 host cells Supports host-cell pathogen interactions, generalised to hypothetical post-BSL-4 hazards, as motivating the proposed BSL-5 tier.
  • hazard identification and risk assessment guides selection of containment requirements

    Hazard identification and risk assessment guide selection of containment/control measures.

    • DOI:10.1016/j.jobb.2021.09.002 WHO LBM4 cyclical process of evaluating risks and selecting and implementing control measures.
  • risk group classification (RG1-RG4) informs biosafety level

    Risk group classification (RG1-RG4) maps to / informs the biosafety containment level.

    • DOI:10.3390/laboratories1030013 BSL categories are progressive containment categories linked to risk group/hazard classification.
  • aerosol/inhalation transmission route increases requirement for BSL-3 containment requirement

    Inhalation/aerosol transmissibility increases the requirement for BSL-3 containment.

    • DOI:10.3390/laboratories1030013 BSL-3 is for agents that may cause serious or lethal diseases through inhalation.
  • lack of effective treatment or vaccine supports classification at BSL-4 containment requirement

    Absence of effective treatment or vaccine supports classification at BSL-4.

    • DOI:10.3390/laboratories1030013 BSL-4 covers highly dangerous, life-threatening agents often lacking vaccines or treatments.
  • aerosol/inhalation transmission route is input to hazard identification and risk assessment

    Route of inoculation / modes of transmission is a practical input to biorisk assessment.

    • DOI:10.1089/apb.2022.0040 BRM focused on route of inoculation/modes of transmission as a practical criterion in biorisk assessment.
  • infectious dose is input to hazard identification and risk assessment

    Infectious dose is a practical criterion used in biosafety risk assessment.

    • DOI:10.1089/apb.2022.0040 BRM identified infectious dose among the practical criteria used in biosafety risk assessment.

Knowledge gaps & discussions (1)

KNOWLEDGE_GAP OPEN Knowledge gap for biosafety level: Additionally, it identifies ongoing challenges and critical knowledge gaps for future research.

Surfaced by the Europe PMC literature gap-signal scan (categories: controversy_conflict, explicit_gap, future_work, limitations_barriers, unclear_unknown). Curator review required: set attaches_to, refine the prompt, and weigh the cited evidence.

4 evidence item(s)
NO_EVIDENCE PMID:41494000 Additionally, it identifies ongoing challenges and critical knowledge gaps for future research. Gap-signal sentence (explicit_gap, future_work, limitations_barriers) from the cited abstract.
NO_EVIDENCE PMID:41556562 This review outlines the possibilities, as well as the limitations of their use in food production. Gap-signal sentence (limitations_barriers) from the cited abstract.
NO_EVIDENCE PMID:41647993 Given the knowledge gap on the characteristics and significance of microbiome in early-onset pancreatic ductal adenocarcinoma (eoPDAC, age 50 years). Gap-signal sentence (explicit_gap) from the cited abstract.
NO_EVIDENCE PMID:41683313 Background : Untargeted microbiome modulation has achieved conflicting results in post-infectious irritable bowel syndrome (PI-IBS). Gap-signal sentence (controversy_conflict) from the cited abstract.

Provenance

Source
METPO (2025-11-25)
Definition source
DOI:10.1146/annurev.micro.62.081307.162938

Parent traits (1)

Children (5)

Synonyms (1)

  • Safety information.risk assessment.biosafety level RELATED_SYNONYM · metpo.owl

kg-microbe context

Matched 1 kg-microbe node via direct_metpo.

  • METPO:1001101 [-2.107, -3.186, -2.412, +0.971, …]

512-dim DeepWalkSkipGramEnsmallen embedding from kg-microbe (2026-04-25).

Nearest neighbors in embedding space

Top-8 cosine-similar METPO traits from the 2026-04-25 deepwalk (512-D).

Curation history

  1. · SEEDED_FROM_METPO · seed_from_metpo

    imported from data/raw/metpo.owl (CLASS)

  2. · CURATED_CAUSAL_GRAPH · claude

    Added DOI-backed causal graph framing biosafety level as a hazard-classification axis driven by pathogen virulence properties, with is-a edges to the five BSL child classifications.

  3. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 5 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (rdfs:subClassOf×5).

  4. · RENAME_PREDICATE_LABELS · claude

    Renamed 1 causal-edge predicate label(s) to align with existing groundings: determines → causes ×1.

  5. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:causes×1).

  6. · ENRICH_CAUSAL_GRAPH · claude

    Added 6 evidence-backed generic edges (7 new nodes) from the deep-research report.