Wait for how long? We've never turned around a vaccine in under 18 months, and some pathogens don't have vaccines and have been around forever. What if it takes 24 months to develop an effective vaccine? Do we lockdown for that long?
You quarantine for that long. NZ is easily isolated, and self sufficient. As long as the deaths keep mounting elsewhere in the world NZ populous might be happy to have no international flights for 24 months.
Wait for how long? We've never turned around a vaccine in under 18 months, and some pathogens don't have vaccines and have been around forever. What if it takes 24 months to develop an effective vaccine? Do we lockdown for that long?