Azrael
circling Airstrip One
Belief in engineering "herd immunity" via controlled mass infection appears to be pervasive among government scientific advisors (just this week, Passport Office staff were told to return to work because 80% of the population would eventually become infected with Covid-19), but like you, I'm not at all convinced that it remains policy. Hancock appears to realize that rolling lockdowns and hundreds of thousands of preventable deaths would be, at the least, politically catastrophic for any government, and raises the real prospect of civil and criminal liability for anyone who attempted it.For weeks it was hard to tell because of their apparent need to avoid the impression of a u-turn when doing the daily briefings. But they foolishly threw around the 20,000 number of deaths as being some sort of target we could judge them by. And there are some signs that the old orthodox approach is actually dead, they are just hedging their bets a bit about what happens instead. eg Whitty recently acknowledging that there were lessons to be learnt from Germany. Its still not enough for me to be highly confident about what strategy they are now following, but I'm reasonably confident it isnt herd immunity any more. Even if for no other reason than the numbers game just doesnt work on this front, not unless they eventually get serological survey data that shows a much higher proportion of the country have already been infected than is currently assumed to be the case.
As ever, I want to know how this belief spread like wildfire through government scientific and medical advisors. Their relying on the old flu modelling alone doesn't explain it, as they know a SARS coronavirus behaves differently, and there's much that remains unknown about its ability to confer natural immunity. Lots more investigation into the roots of this lethal orthodoxy needed.