Outbreak & Conflict Epidemiology Timeline
Chronological documentation from the 2017 cholera surge through the 2020–2021 COVID-19 response timeline cited by WHO EMRO and peer-reviewed humanitarian medicine literature.
15.3694 N · 44.1910 E · YEMEN CORRIDOR GRID
Vermilion: Critical Access
Teal: Hub / Staging
Select any governorate node above to inspect P-Code telemetry, HeRAMS functionality share, and primary supply-line topography.
Conflict Medical Geography · Yemen & MENA
Yemen Conflict Medical Geography & Health Facility Observatory
Operational Synthesis
Across Yemen's 22 governorates and 333 districts, only 51% of surveyed public health facilities operate at full capacity under HeRAMS criteria, while 36% run on partial solar or rationed fuel and 13% are closed. Multi-checkpoint corridors routinely push cold-chain transit beyond 24 hours.
2017–2019 · CHOLERA & WASH COUPLING
2.1M+ Suspected Cholera Cases Mapped Across Catchment Basins
Rapid oral cholera vaccination and WASH sentinel tracking linked highland municipal water collapse to district attack rates.
2020–2021 · WHO COVID-19 TIMELINE & YHF
District Surveillance & Oxygen Isolation Telemetry
Archived Yemen outbreak response timeline and WHO/OCHA facility dashboards documented reporting lag across northern and southern hubs.
2022–2026 · SOLAR COLD-CHAIN TRANSITION
WHO PQS Solar Direct-Drive (SDD) Stabilization
Replacing diesel generator failure with 48-72 hour battery-free ice-bank holdover across rural primary care centers.
Interactive Corridor Simulator
Yemen Medical Logistics Accessibility & Cold-Chain Disruption Workbench
Evaluate thermal excursion risk across port-to-highland supply corridors without server telemetry. Select governorate, cargo stability class, power architecture, and checkpoint delay.
1. Target Governorate Corridor
2. Medical Supply Thermal Class
3. Receiving Cold-Room Architecture
4. Checkpoint & Road Delay
10 h
5. Carrier Holdover Rating
48 h
URGENT · BUFFER DEPLETION
Taiz: narrow thermal reserve across 21 h corridor transit.
Total Transit
21 h
Thermal Margin
+27 h
HeRAMS Full
48%
Dispatch prior to dawn thermal peak via Aden to Tur Al-Bahah switchbacks. Attach 30-day electronic logger (30DTR) and verify solar autonomy at destination.
Priority Yemen Health Corridor Snapshot (HeRAMS & 3W Baseline)
Summary telemetry across six high-volume medical logistics corridors. Full 22-governorate operational breakdown is maintained in the Governorate Facilities Directory.
| Governorate | OCHA P-Code | Surveyed Facilities | Fully Functional | Peak Ambient | Access Tier |
|---|---|---|---|---|---|
| Aden | YE-24 | 112 | 67% | 39 C | PORT HUB |
| Sana'a & Amanat Al Asimah | YE-19 / YE-13 | 294 | 52% | 31 C | RESTRICTED |
| Ma'rib | YE-26 | 88 | 49% | 42 C | DESERT ROUTE |
| Taiz | YE-15 | 318 | 48% | 34 C | CONTESTED |
| Al Hudaydah | YE-18 | 265 | 44% | 41 C | HEAT LOAD |
| Sa'dah | YE-22 | 141 | 38% | 32 C | HIGH IMPEDANCE |
Surveillance & HeRAMS Dashboard Architecture
Technical documentation of district-level COVID-19 and HeRAMS data streams cited in UN Security Council S/2021/79, UN OCHA YHF strategy papers, and WHO IRIS guidance.
Frequently Asked Questions
How many public health facilities in Yemen remain fully functional under HeRAMS baselines?
Across multi-year WHO HeRAMS assessments spanning 5,056 public health facilities in 333 districts, roughly 51% operate at full functionality, 36% operate partially due to power, staff, or supply deficits, and 13% remain non-functional.
Reference baseline: Governorate Health Facility Matrix and WHO EMRO Yemen.
Why do coastal-to-highland medical corridors trigger vaccine cold-chain excursions?
Deliveries moving from Red Sea or Gulf of Aden ports (38-42 C ambient peaks) through multi-checkpoint mountain ascents face 10-20 hour transit delays that exhaust standard ice-lined passive carriers unless buffered by WHO PQS solar direct-drive (SDD) staging.
Protocol manual: Cold-Chain Disruption & Thermal Holdover Lab.
Archival Context: yemen.immap-mena.info Subdomain Portal (2017–2025)
Preserves continuity for historical references pointing to https://yemen.immap-mena.info/. Specific thematic portals—including the WHO COVID-19 response timeline, district surveillance dashboards, 3W partner matrix, and Nutrition Cluster maps—are routed directly via single-hop 301 edge redirects to their dedicated thematic pages on this independent observatory. See full provenance and non-affiliation charter.
Archival Context: immap-mena.info Regional Information Management Index (2016–2025)
Documents the historical regional information-management portal formerly hosted at immap-mena.info (2016–2025), archived here solely for citation preservation alongside modern GIS and public-health resilience benchmarks.