In an undated image from Ian M. Mackay, the multilayered "Swiss cheese" model Mackay adapted for the coronavirus pandemic. "It's important to use more slices to prevent those volatile holes from ...

Public health experts say good gun laws require multiple defence layers, advocating for risk management approach called the 'Swiss cheese model'.

The image, which is based on the Swiss cheese Model of Accident Causation, has been used as a coronavirus recourse in Korea, Spain and Germany, where the virus is running rampant.