How do you know only a small percentage of the population has had it? To know that, everyone would have to be tested.
They can estimate from antibody studies how many people are likely to have had it. But even so, there is no guarantee of lasting immunity if you have had it. It is too early to tell
I suspect you will eventually be surprised how many people have had it. And you're sure the restrictions helped. They didn't help the 10,000+ elderly dead in care homes, the 10,000+ dead from lack of medical care or the 6,000+ dead who were suddenly ill and died, too afraid to go to A&E in case they caught the virus.
But without lockdown those numbers would have been far higher
That's without counting the ongoing extra suicides the restrictions caused. Or the extra domestic abuse of women and violence against children.Then there's the murders. On and on it goes
But again, without lockdown those numbers would have been higher
Imagine if the virus had been left uncontrolled back in March. We would have had over half a million dead within a matter of weeks. Imagine the suffering then. Hospitals and mortuaries would have been overwhelmed. Thousands, ten of thousands even, would have died alone at home or even in the streets, without medical care at all. The police and social services would have been overwhelmed too. Any of them in contact with the virus would have had to self isolate. Compared to now the scale of suffering would have been unimaginable. What then for people with mental health problems or victims of domestic abuse?
A close relative of mine is a social worker and precisely because of lockdown she has still been able to do her job. These services, including mental health, have been operational throughout lockdown. Without lockdown they would have collapsed
Remember the graphs in March and April. Without lockdown, they would have climbed and climbed ...imagine that