The herd immunity is a rational argument but became an irrational argument once other models became viable:
- Extreme social control - China
- High tech testing and detective work - South Korea.
Vaccines appear to be advanced enough to put all priority into social distancing. The longer we leave this, the higher the number of the infected becomes and therefore the harder it will be to stop.
Trying to slow it down, and therefore build up some immunity makes no sense if the objective is to end the infection. If the objective is to build up immunity, then everything the govt has done makes good sense.
I hope Boris panics when he sees the criticism and shuts the country down. If we have 10,000 cases now, then in a week's time we will have 20,000 cases at least, and more people will die. There is no sense in waiting. The immunity argument only stands if you think a vaccine is impossible or not part of the equation.
I suspect China is going to get reinfected but I also suspect that they can control it this time with huge screening programs and high tech. The western medical practioners don't seem willing to learn from their peers but that is what science is all about. You don't always know best. When someone else produces the result they are right.
The herd immunity thing is a classic example of poor communications and panic inducing media creating a completely false narrative.
The government's policy was never to develop herd immunity. They never even said that. It will be a result of the strategy which reduces without completely shutting down the country as Italy has done. The isolation model will result in secondary, and tertiary massive outbreaks with the whole country overrun and locked down, while the UK's approach of a long single outbreak will not have another outbreak.
The problem is that as soon as people heard "herd immunity" they completely ignored the rest of the sentence, which was -
“Our aim is to try to reduce the peak, broaden the peak, not suppress it completely; also, because the vast majority of people get a mild illness, to build up some kind of herd immunity so more people are immune to this disease and we reduce the transmission, at the same time we protect those who are most vulnerable to it.”
Here's some comments from people who were actually involved in making the strategy -
“People have misinterpreted the phrase herd immunity as meaning that we’re going to have an epidemic to get people infected,” says Graham Medley at the London School of Hygiene and Tropical Medicine. Medley chairs a group of scientists who model the spread of infectious diseases and advise the government on pandemic responses. He says that the actual goal is the same as that of other countries: flatten the curve by staggering the onset of infections. As a consequence, the nation may achieve herd immunity; it’s a side effect, not an aim. Indeed, yesterday, U.K. Health Secretary Matt Hancock stated, “Herd immunity is not our goal or policy.” The government’s actual coronavirus action plan, available online, doesn’t mention herd immunity at all. “The messaging has been really confusing, and I think that was really unfortunate,” says Petra Klepac, who is also an infectious-disease modeler at the London School of Hygiene and Tropical Medicine.
It's being reported now that they're "Backing away from" that strategy, but they aren't, they're just explaining the strategy better now people will listen.