eVax Cold Chain Guard — Digital Vaccine Cold-Chain Tracking
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
8 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.
How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page
Malawi's paper vaccine-fridge inventory once took five years to compile. Lilongwe was one of the first two districts to try a QR-code fix in March 2024 - and four weeks later 20 districts had joined.
what does this mean?
The strongest source is press reporting; no primary evaluation was located. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 1 more in Lilongwe · 🏥 Health & care guide · 👥 Society projects
Lilongwe was one of two districts - with Ntchisi - whose cold-chain technicians were first trained on eVax Cold Chain Guard in March 2024, a Tracker programme inside Malawi's national DHIS2-based One Health Surveillance Platform. Technicians tag refrigerators and cold boxes with QR-code labels and log equipment status from a phone, replacing hard-copy forms and spreadsheets. Malawi's facilities have carried Nexleaf ColdTrace remote temperature monitors since 2021; a 2025-2027 roadmap is meant to bring those readings into the same system.
📊 Impact
In three weeks the technicians in the two districts registered 200 pieces of equipment in 105 facilities; a week later they mentored technicians in 18 additional districts, who added another 100, for 300 items across 20 districts in four weeks. DHIS2 writes that inventory data that once took five years to generate is now available within five minutes.
🎓 Lesson
Two donor-funded systems watch the same refrigerator. Nexleaf's ColdTrace remote temperature monitoring reached every health facility and vaccine storage point in Malawi from 2021, with UNICEF and Gavi; the QR-code equipment register arrived in 2024 through the ministry's own DHIS2 platform. What the 2025-2027 roadmap buys is joining them - so that the ministry can see which fridges exist and how cold they are on one screen. The register itself moved on people rather than hardware, technicians in two districts mentoring technicians in eighteen more, and the case study is candid about what that cost: staff used their own mobile devices for data entry, and at remote facilities without connectivity the data could only be uploaded once network coverage returned.
Sources
Show your work What this page rests on and what it can’t tell you · all 8 claims with their sources · the forensic record
Evidence Passport · public beta 8 addressable claims, 2 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 8
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-ff3fd5fb9effc3a7
quantitative
one of two districts - with Ntchisi - whose cold-chain technicians were first trained on eVax Cold Chain Guard in March 2024
Sources carrying this claim
clm-6aa0198a814cea6d
descriptive
Technicians tag refrigerators and cold boxes with QR-code labels and log equipment status from a phone, replacing hard-copy forms and spreadsheets
Sources carrying this claim
clm-5e7359ed7444b1b5
quantitative
Malawi's facilities have carried Nexleaf ColdTrace remote temperature monitors since 2021
Sources carrying this claim
clm-08df46e0f694f4b1
quantitative
a 2025-2027 roadmap is meant to bring those readings into the same system
Sources carrying this claim
clm-e981e5db8db76f8f
quantitative
In three weeks the technicians in the two districts registered 200 pieces of equipment in 105 facilities; a week later they mentored technicians in 18 additional districts, who added another 100, for 300 items across 20 districts in four weeks
Sources carrying this claim
clm-20ed3e80507c470c
descriptive
inventory data that once took five years to generate is now available within five minutes
Sources carrying this claim
clm-5e750dcc89fe3d89
quantitative
reached every health facility and vaccine storage point in Malawi from 2021, with UNICEF and Gavi
Sources carrying this claim
clm-bc7f683ac55b9ee6
descriptive
staff used their own mobile devices for data entry, and at remote facilities without connectivity the data could only be uploaded once network coverage returned
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:aabd179261e4da76fd2bf0cda0467adb4e895ea731bb2c9a0f05ee645d7f9ba3
- 8
- of 8 claims mapped
- 2
- source dossiers
- 2
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- Malawi Ministry of Health, Digital Health Division and Expanded Programme on Immunization
- Actor types
- national-government
- Funding model
- Not recorded
- Funding description
- Not recorded
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
2 source dossiers
DHIS2 — Cold Chain Equipment Monitoring in Malawi (technology partner)
- Stable source ID
src-445f4a2efdb2d0f7- Publisher
- Name not classified · dhis2.org
- Type / language
- web-page · language not classified
- Published
- 2024-08-29
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-28
- Dossier created
- 2026-08-28
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Case study by the platform's steward: "training for cold chain technicians from two targeted districts—Lilongwe and Ntchisi", QR-code labels, "In only three weeks, the technicians in these two districts were able to register 200 pieces of equipment in 105 facilities", then "another 100 pieces of equipment in one week, for a combined result of 300 items registered in a total of four weeks", "Inventory data that once took five years to generate is now available within five minutes", and a "modernization roadmap to be implemented from 2025 to 2027" that includes "integration of other types of data, including remote temperature monitoring data". It also records that technicians used their own mobile devices and that connectivity failed at remote facilities. Written by the technology partner, not by an outside evaluator.
Nexleaf Analytics — Malawi partnership (remote temperature monitoring provider)
- Stable source ID
src-57cb61eab1334687- Publisher
- Name not classified · nexleaf.org
- Type / language
- web-page · language not classified
- Published
- 2025-03-04
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-28
- Dossier created
- 2026-08-28
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The remote temperature monitoring provider's own account: Nexleaf and Malawi "first collaborated in 2021, in partnership with UNICEF, to bring Nexleaf's ColdTrace remote temperature monitoring (RTM) solution for the vaccine cold chain to every health facility and vaccine storage point in Malawi", with support from Gavi and the Patrick J. McGovern Foundation, and a partnership "now formalized through 2027". Establishes that the sensors predate the QR register; also a partner source, not an evaluation.
- Claims linked
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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📎 Cite this project
1001 Smart Cities (2026). “eVax Cold Chain Guard — Digital Vaccine Cold-Chain Tracking” — Lilongwe, Malawi. The Smart City Atlas. https://1001smartcities.org/projects/lilongwe-health-telemetry/ (last verified 2026-08-28). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.