MILWAUKEE – Is a gun like a virus, a car, tobacco or alcohol? Yes, say public health experts who in the wake of recent mass shootings are calling for a fresh look at gun violence as a social disease.

What we need, they say, is a public health approach to the problem, like the highway safety measures, product changes and driving laws that slashed deaths from car crashes decades ago, even as the number of vehicles on the road rose.

One example: Guardrails are now curved to the ground instead of having sharp metal ends that stick out and pose a hazard in a crash.