Blueprint: Airborne-Infection Control in a Low-Resource Clinic Waiting Room — Implementation Specification

Implementation specification for the ranked ventilation protocol for a 90 m3 clinic waiting room with 30 occupants: two opposed 2.0 m2 cross-ventilation openings (24.22 risk-reduction points per $100, $120) paired with an 850 m3/h exhaust fan ($180) holding modelled infection probability at 0.0173 with no wind against a 0.293 baseline, with stack ventilation and upper-room ultraviolet in ranked reserve. DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT, NOT CLINICALLY TESTED. Blueprint for the protocol published as DOI 10.5281/zenodo.24108454.