The numbers that justify the grading lens
The case for treating outbreak equipment as a logistics discipline, not a catalogue exercise, is written into the mortality data. Severe cholera left untreated carries a case-fatality rate of roughly 30 to 50 percent; with prompt and adequate rehydration — oral rehydration salts for most, intravenous fluids for the severe — that figure falls below one percent. The entire collapse from one-in-three dead to one-in-a-hundred is delivered not by a novel therapeutic but by calibrated cots that measure fluid loss, ORS that arrives in volume, and a treatment-centre layout that keeps the circuit clean. The equipment is the intervention.
The same arithmetic governs responder safety. During the 2014–15 West African Ebola epidemic the WHO recorded health workers as about 3.9 percent of all cases overall, with the proportion reaching as high as 50 percent in some settings, and field reviews traced a large share of those infections to the doffing of contaminated PPE under heat and fatigue rather than to barrier failure. As coordinated infection-prevention support improved through the epidemic, the health-worker share of new cases fell from around 12 percent in mid-2014 to roughly 1 percent by early 2015 — a reduction achieved through protocol, training, and the kit that supports a clean exit, not through a better fabric. We grade against these realities because they are where outbreak equipment actually decides outcomes.