The CMAJ commentary by Galanis and colleagues (2026) correctly flags rising risks of tick- and mosquito-borne pathogens as temperatures climb, yet it remains largely descriptive expert opinion rather than data-driven analysis. Observational surveillance from Public Health Agency of Canada reports shows Lyme disease cases increased roughly threefold between 2009 and 2019, driven by northward expansion of Ixodes scapularis; this is ecological trend monitoring, not an RCT, with no reported industry conflicts but limited by passive reporting biases. A 2023 study in Emerging Infectious Diseases (sample size over 12,000 ticks across 200 sites) documented Asian tiger mosquito detections in southern Ontario consistent with the commentary's warning, confirming climate suitability models but noting confounding urban heat-island effects. Mainstream coverage often overlooks how these shifts interact with human land-use changes, such as suburban sprawl increasing reservoir host contact. Clinicians must move past generic summer precautions toward region-specific risk stratification informed by real-time vector mapping, a gap the original piece does not address.