Are you implying the nations who have reduced infections to manageable levels have made their entire countries biosafety level 4? How long do you think herd im

Are you implying the nations who have reduced infections to manageable levels have made their entire countries biosafety level 4? How long do you think herd immunity will last because its up for debate. What should we tell the families of the 0.08 - 0.8% of the world population who died when it turns out to not be long? Even if herd immunity lasts forever, if we get a vaccine months later many died for no reason.