The last mile begins at the fuel tank

Reporting cutoff: 24 October 2026.

Before a clinic runs out of a medicine, the warning may appear somewhere else: in a delayed cargo invoice, an empty diesel drum, a cold-room alarm, or a truck that has not left the district warehouse.

That is why an energy shock can become a health-system shock without directly damaging a hospital. Fuel powers generators and ambulances. Electricity runs some oxygen systems and the refrigerators that protect temperature-sensitive products. Trade credit and foreign exchange pay suppliers. Ships, aircraft and trucks carry stock from manufacturers to national stores, then to facilities. A break at any link can delay access; several breaks at once can make a routine resupply cycle unreliable.

The distinction matters. A medicine “shortage” means supply is insufficient to meet public-health or patient need across some part of the chain. A “stock-out” is the absence of a product at a particular point—often the facility where the patient would receive it. WHO notes that an item can exist in a national store yet be absent at a clinic; its definition of medicine access also combines availability with affordability. The national inventory can look adequate while a patient cannot get the product at the right place, time or price. WHO’s shortage definitions and access indicators make those levels distinct.

The shock travels through systems before it reaches a shelf

A war or blockade can raise oil prices, reroute vessels and delay air cargo. Higher freight and fuel bills increase the working capital needed to keep an order moving. If a supplier is waiting on a payment, the importer may postpone the next order even though the medicine is still being manufactured. If shipment schedules become less predictable, a distributor may have to hold a larger buffer or risk running out between deliveries. None of those outcomes is automatic; they are transmission routes that can compound when a health budget, foreign-exchange supply or transport network is already tight.

The World Health Organization reported in March 2026 that conflict-related airspace restrictions had disrupted movement of medical supplies from its global logistics hub in Dubai. More than 50 emergency supply requests intended to benefit over 1.5 million people across 25 countries were affected, creating backlogs. In October, the World Food Programme reported that disrupted routes through the Strait of Hormuz, Red Sea and Black Sea had raised its shipping costs by about 20 per cent and fuel for airdrops and humanitarian flights by about 35 per cent. These are measurements of logistics and humanitarian operating costs; they do not show that every country ran out of medicines. They do show how longer routes can absorb money and time before the last mile begins. WHO’s 11 March update and WFP’s 8 October report document those disruptions.

Inventory is a clock, but there is no single clock for the whole health system. National agencies may count buffer stock at a central warehouse; a county store may have less; a remote clinic may have a few days’ supply or none. WHO’s vaccine-supply data tracks stock-outs separately at national, district and facility levels, and records causes such as funding or procurement delays, distribution and fuel problems, and cold-chain failures. A report that “the country has stock” does not establish that every facility has it. WHO’s vaccine supply and logistics indicators show why stock visibility must follow products through each storage point.

Cold chain is a power service

The “cold chain” is the equipment, packaging, temperature monitoring, transport and staff procedures that keep some health products within their approved storage conditions from production to use. It applies to temperature-sensitive products, not every pill in a pharmacy. Vaccines are a visible example, but some other health products also need temperature-controlled handling. A cold chain is not just a refrigerator; it includes the power source, maintenance, data logger, backup plan and transport. UNICEF’s supply guidance describes grid, generator and solar-battery arrangements as well as cold boxes and vaccine carriers used between storage points. UNICEF Supply Division’s cold-chain guidance covers this equipment layer.

If a refrigerator loses power, the temperature history matters. A temperature excursion is a warning that requires product-specific assessment; it does not, by itself, prove every vial is unusable. WHO’s vaccine-management guidance calls for temperature monitoring and records through storage and transport so that a problem can be detected and corrective action taken. Some vaccines may be licensed for a controlled temperature chain under defined time and temperature limits. That exception is product-specific and monitored; it is not permission to treat all cold-chain products alike. WHO’s temperature-monitoring handbook and controlled-temperature-chain guidance describe the system and its limits.

For a rural facility, one small piece of equipment can alter the service schedule. At Yapha Dispensary in Kenya’s Kwale County, Gavi reports that the clinic was off-grid and did not have a refrigerator for vaccines and other temperature-sensitive medicines. Staff had to collect vaccines from a sub-county store about 10 kilometres away and hold immunization sessions only once a week. A solar direct-drive refrigerator installed in 2025 enabled on-site storage; the report says vaccination availability increased. It is a local case, not proof that a solar fridge alone solves energy insecurity. The useful lesson is that storage, electricity, staff time and access to the clinic are connected. Gavi’s report from Yapha Dispensary describes the service change.

The wider electricity base remains fragile. WHO’s 14 October 2026 fact sheet estimates that 15 per cent of health facilities in sub-Saharan Africa have no electricity access and only 40 per cent have reliable electricity. Generators help only if they work and fuel reaches them. Solar and battery systems can reduce dependence on diesel, but they also require maintenance, spare parts, monitoring and a budget for replacement. WHO’s health-facility electricity data makes reliability, not simply grid connection, the relevant measure.

Oxygen has its own supply chain

Medical oxygen illustrates how product supply and power supply meet. Depending on the setting, oxygen may arrive in cylinders or as liquid oxygen, or be produced locally by an oxygen plant or concentrator. Production and distribution require equipment, maintenance, transport and power. WHO says fewer than half of health facilities in low- and middle-income countries have uninterrupted access to medical oxygen; shortages can arise from limited production, weak distribution, unreliable electricity, inadequate equipment, storage constraints, funding or technical gaps. WHO’s statement on safe medical oxygen treats oxygen as a system problem rather than a single commodity purchase.

Conflict can interrupt each part. At the start of the 2022 war in Ukraine, WHO warned that trucks could not reliably move oxygen from plants to hospitals and that electricity shortages were threatening critical hospital services. Some oxygen plants also faced shortages of an imported input used in production. The immediate risk was not just “no oxygen in the country”; it was oxygen that could not be produced or delivered to the facility in time. WHO’s 27 February 2022 update documents that sequence.

Fuel is another clinical input when a hospital depends on generators. In 2025, WHO reported supplying 4.33 million litres of fuel to 177 health facilities in Yemen to keep generators operating, alongside medical oxygen deliveries to dozens of facilities. This does not mean fuel can replace resilient electricity, but it shows how operating budgets and fuel deliveries can determine whether existing equipment works. When diesel supplies fail, operating theatres, laboratories, water pumps, oxygen plants and ambulances can all compete for the same resource. WHO Yemen’s 2025 report describes this dependence.

Kenya’s import exposure—and the local capacity question

Kenya shows both the exposure and the possible response. WHO reports that the country imports an estimated 70 to 80 per cent of the pharmaceuticals it consumes, while local manufacturers already produce hundreds of formulations and export across the region. The dependence is therefore real but not absolute. Kenya’s 2026–2030 Health Products and Technologies Local Manufacturing Strategy aims to expand domestic production, but strengthening production also requires quality regulation, reliable raw-material supply, financing and predictable procurement. Local manufacturing cannot instantly replace every imported ingredient or product. WHO’s July 2026 profile of the strategy records both the import share and existing domestic capacity.

During a global fuel or trade shock, import dependence can work through the price and financing chain before it creates a physical shortage. A shipment may be delayed, its insurance premium or freight cost may rise, and an importer may need more working capital to hold the order. A clinic’s patient may then face a stock-out even while product remains available elsewhere in the country. Conversely, a high import share alone does not predict a stock-out: procurement planning, supplier diversity, stock visibility, budget release timing and transport capacity all affect whether stock reaches the facility.

Continuity is built before the route closes

Health systems can reduce exposure by tracking inventory at the level where care is delivered, not only by publishing a national stock figure. They can monitor temperature and fuel needs, maintain backup power that is actually serviced, diversify suppliers and freight routes, and protect payment and operating budgets for essential products. Oxygen systems need lifecycle maintenance as much as initial installation. Vaccine cold-chain equipment needs trained staff, alarms, records and a plan for power failure. Regional procurement and local manufacturing can help when several supply routes are disrupted at once, but neither removes the need for adequate financing and quality assurance.

The larger lesson is that a medicine shortage is not a single event. It can begin as a late payment, a fuel allocation, a delayed cargo, a broken refrigerator or a warehouse that cannot dispatch. At the other end is a person who finds the medicine absent or unaffordable. Counting only the first event tells little about the last. A credible warning system follows both: where the supply is, and whether the patient can reach it in time.

Sources

• WHO: health-care facility electricity, 14 October 2026
• WHO: safe medical oxygen
• WHO: technical definitions of medicine shortages and stock-outs
• WHO: access-to-medicines indicators
• WHO: vaccine temperature monitoring handbook
• WHO: controlled temperature chain conditions
• WHO: oxygen disruption in Ukraine, 27 February 2022
• WHO Yemen: fuel, oxygen and facility support in 2025
• WHO: Dubai logistics hub disruption, 11 March 2026
• WFP: humanitarian shipping and fuel costs, 8 October 2026
• Gavi: solar cold-chain case, Kwale County, Kenya
• UNICEF Supply Division: cold-chain equipment and power options
• WHO: Kenya local-manufacturing strategy and import dependence, 16 July 2026

A solar-powered Haitian clinic refrigerator storing rabies vaccine, photographed in 2017. Historical file photo illustrating cold-chain continuity. Credit: Max F. Millien, Jocelyne B. Pierre-Louis, Ryan Wallace, Eduardo Caldas, Jean M. Rwangabgoba, Jean L. Poncelet, Ottorino Cosivi and Victor J. Del Rio Vilas, via Wikimedia Commons. Image source · CC0 1.0 Universal Public Domain Dedication