I think a lot of people have a wrong idea of what herd immunity is and how it develops

1. Herd immunity is a good thing, it protects people who have not been sick from getting sick.

2. Herd immunity will come about whether you have or don't have a vaccine or a cure.

3. Herd immunity comes in several ways:
   a) you have a vaccine and you vaccinate most people so they become immune;
   b) enough people get sick from the virus and develop immunity
   c) enough people die so that your population shrinks and the vulnerable ones are now dead.

   Of course, we want (a) but not (b) and (c). So planned herd immunity using vaccines are actually GOOD. Unfortunately, many now thinks that planned herd immunity is bad. It may only be bad if it goes through route (b) or (c). Route (b) is not bad if most of the people who get sick are strong enough to overcome the virus and recover. This is the case with ordinary flu. We do not worry about ordinary flu because many of us just get it and recover pretty well.

The problem we have now is that we can't have (a) because we do not have a vaccine and a vaccine is 12 to 18 months away.

We can slow down the virus spread through the ECQ.

ECQ, however, can only last so long as the government can provide support for all those people who lost their work. Unfortunately, even just providing food and social amelioration is not enough as electric, water and rent bills are piling up. The cure, ECQ, can be worse than the disease itself if it runs for too long.

Once the ECQ is lifted, then what do you have. If the virus is not totally stamped out and the populace does not have the herd immunity it needs, it will just rage on again and another bump in cases and deaths will happen until herd immunity is achieved.

I hope I have provided enough info to clarify matters.