Actually it happened 30 years ago. In 1991, the Protocol on Environmental Protection was enacted, banning all non-native species (except humans). The goal was to prevent the introduction of infection or disease from outside.
A life-saving idea: We expand the ban by changing the geography to local public gathering spots like supermarkets and restaurants and swap dogs for unvaccinated humans who refuse to wear a mask. By doing this we too can stop the proliferation of disease into our population.
Get vaccinated you brainless weenie! (I mean that in the nicest way)