Island nations have the edge in keeping Covid away – or most do

Nations from New Zealand to Cuba closed borders promptly with strict quarantine rules, but the UK won't admit its serious mistake'

Island nations have an advantage when it comes to stopping travellers importing disease, be it Covid or other infections.

Seas are usually harder to cross than land, and beaches are easier to police. There are no cross-border towns, and fewer ways to sneak over frontiers.