Genomic surveillance of pathogens
Sequences from clinical, animal and environmental samples are assembled, assigned to lineages and placed on phylogenies to identify variants and assess relatedness, with sampling coverage reported beside every tree.
GCRI · Health Nexus
Molecular and life sciences for health threats
Molecular and life sciences characterise the pathogens, hosts and vectors behind health threats: their genomes, how they evolve, how they resist drugs and how they move between species. In this field they supply the laboratory and genomic evidence that confirms an event, links cases and tracks resistance across human, animal and environmental samples.
01Register
Molecular and life sciences for health threats on the record.
Method recordSTEM method
- MethodMolecular and life sciences
- Applied inHealth Nexus
- Data4 inputs
- Checks3 validation steps
- Canonical pageSTEM Commons
02Application
What molecular and life sciences does here.
Molecular and life sciences study the structure and function of living systems from genes and proteins to cells and organisms. They underpin the understanding of pathogens, resistance, toxicity and biological innovation. In health and biosecurity, life sciences support pathogen characterisation, antimicrobial resistance tracking and biosecurity assessment. They inform how biological threats might spread through health, agriculture and trade. The canonical description is on the STEM Commons.
Cross-species linkage in One Health
Pathogen and resistance-gene sequences from people, livestock and the environment are compared to assess whether they share a source, under agreed sampling and metadata standards.
Wastewater and environmental surveillance
Nucleic acid targets in wastewater are measured and normalised for flow and population markers to follow community infection trends independently of who seeks testing.
03Sector signature
The sector signature of molecular and life sciences for health threats.
The sectors molecular and life sciences for health threats touches and how strongly they depend on each other: what a study has to observe and model together.
Select corners · hover lines6 / 15 relations
Signature
Health and its partners
Health gives workforce for operations to infrastructure (0.3), farm labour to food (0.3) and utility workforce to water (0.2).
W · E · I · F · H · B
- Sectors
- 4 of 6
- Relations
- 6 of 15
- Coupling
- 0.42 share of total
Strongest relations in play
- Water → Food · irrigation0.8
- Food → Health · nutrition0.7
- Infrastructure → Water · pipes, dams and treatment works0.6
- Water → Health · drinking water and sanitation0.7
04Data
What the method consumes.
Datasets and records used by molecular and life sciences on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.
| Data | Role | Label |
|---|---|---|
| INSDC archives (GenBank, ENA, DDBJ) | Reference and outbreak sequences | OBSERVED |
| GISAID | Influenza and coronavirus genomes with metadata | OBSERVED |
| WHO GLASS | Resistance phenotypes from laboratory surveillance | REPORTED |
| Wastewater sampling programmes | Community trend signals | OBSERVED |
05Methods and evidence
How molecular and life sciences for health threats is modelled, measured and tested.
The model, its assumptions, its data and its uncertainty, in the form a scientist or engineer would check. Structures follow published methods. The values drawn are illustrative, not findings.
Uncertainty bands
How far the outlook for molecular and life sciences for health threats could spread, shown as ranges rather than a single line.
- Central estimate
- median of the ensemble
- Ranges
- likely and very likely, in IPCC calibrated language
- Ensemble
- members, scenarios and initial conditions stated
- Read with
- the sensitivity of the result to each input
FAIR guiding principles · GO FAIR and FORCE11W3C PROV · World Wide Web ConsortiumGuidance on consistent treatment of uncertainties · IPCCCEOS Analysis Ready Data · Committee on Earth Observation Satellites
06Validation
How results are checked.
Results are confirmed through biological replicates, independent laboratories and orthogonal assays. Reference standards and proficiency testing check analytical accuracy.
| Check | How it is done |
|---|---|
| External quality assessment | Laboratories take part in proficiency testing and use reference materials for each assay |
| Sampling representativeness | How sequenced samples were selected is reported, so lineage shares are not over-read |
| Phylogenetic robustness | Trees are tested with bootstrap or posterior support and alternative models before relatedness is described |
Laboratory findings do not always translate to organisms or populations. Sampling bias in sequence databases limits generalisation.
07Process
How the process runs.
Process
Molecular and life sciences for health threats: Life-science research oversight
Capacity and oversight only, following the WHO Laboratory biosafety manual (4th edition) and WHO life sciences framework, with no methods, agents or protocols.
01 Institution
- 01ProposalDatasetA research institution submits a proposal for review. The place is set by the page.
- 02Institutional committeeGate · The institutionA biosafety committee is an independent institutional review group, reporting to senior management. Review follows national rules.
- 03Conditions: risk control measuresStepA risk assessment sets the measures: core requirements, heightened control measures or maximum containment, not one biosafety level.
- 04Training and competenceStepActual risk depends on the agent, the procedure and staff competency. Training and personnel competence have their own section.
02 Assurance
- 05Audit and inspectionGateMany labs run cooperative inspections: periodic self-audits plus a rarer, deeper evaluation with the biosafety officer or committee.
- 06Emergency and incident responseStepThe manual covers emergency and incident response at each level of measures. External reporting of incidents depends on national rules.
03 National
- 07National oversightDecision · District health officeThe WHO framework is for those who govern biorisks, such as policy makers and regulators. National bodies set national rules.
Neutral outline of a published external standard or method, from its issuing body. Not a record of operation. Nexus does not perform, certify or approve any step shown. A gate or decision belongs to the party the source names. The Biological Weapons Convention is not drawn in this flow. The framework is the WHO global guidance framework for the responsible use of the life sciences.
08Connections
Topics that rely on this method.
09Stewardship
Who maintains the method.
Biotechnology and Biosecurity stewards molecular and life sciences for the Consortium and reviews how it is applied across platforms.
10Connected
Where this page leads across the Consortium.
11Questions
Questions and answers.
What are the limits of molecular and life sciences in this field?
Laboratory findings do not always translate to organisms or populations. Sampling bias in sequence databases limits generalisation.
How are results checked?
Results are confirmed through biological replicates, independent laboratories and orthogonal assays. Reference standards and proficiency testing check analytical accuracy.
Are the values on this page real?
The data names, roles and checks are real descriptions of practice. The canvas shows a design of the method’s use, not a run; no result is reported here.
Where else is this method applied?
The canonical method page lists every platform that applies it.
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