From the very end of the &quot;article&quot;<p>&gt;or essentially 95% of the population to be vaccinated to get herd immunity. This has profound policy implications. To be provocative: If you, as a health official, know that this number is unatainable (e.g., because too many people decide not to vaccinate their kids for some reason) -- should you recommend stopping the program to mandate vaccinatons on everyone else?<p>(spelling errors in article)<p>To say the least this a provocative statement. Even without achieving &quot;herd immunity&quot; many lives will be saved.  That should make decisions about vaccinations more obvious.