Andy Kev.":1yugeq6j said:
Here's a paragraph written by a doctor in an article in the Daily Telegraph:
Medically, fighting an epidemic by suppressing it through draconian restrictions of liberty achieves the opposite of herd immunity. It ensures that the majority of survivors have no immunity and so are at just as much risk next time around. Of course, the advocates of this approach are banking on the development of vaccines and other therapies for the management of the next epidemic. But a usable vaccine will almost certainly not be available by the time this disease comes back for an encore. Novel treatments based on anti-malarial drugs and antibiotics will also need to be evaluated in proper clinical trials. So, we will have to do the same again next time with the attendant risks to the economy and the fabric of society.
I don't think that there is anything controversial or novel in the ideas expressed in that. It does however bring the debate about the better strategies to a point: the UK's current approach depends entirely on the development of vaccines etc. before the virus reappears.
If we go through the same thing again (although presumably for a shorter time as implementation will be quicker), will we regard the current strategy as having failed? If, on the other hand, we had herd immunity a reemergence would of course be very short lived indeed.
As I said in a previous post we won't be able to come to any sensible judgement for some time yet but as someone whose initial instinct was to go for a shutdown, I'm slowly warming to the herd immunity argument.
What I do think should happen is that when it starts again and reappears in country X, then all flights to that country should be suspended and all recent entrants from that country (irrespective of nationality) should be quarantined.
The quote from a doctor in the DT that you cite is, I'm afraid, another example of amateur epidemiology. I don't doubt his/her front line skill, experience and stress, and am totally grateful for it. But it's a classic 'straw man' argument: assume your opponents' position then argue against it. The assumption here is that the lockdown will end suddenly, in which case he or she would be right. But that is not the policy. We already heard the deputy CMO say that some sort of restrictions will probably go on for at least six months. She doesn't say what or how as nobody knows that yet. As I mentioned earlier in this thread, a vast epidemiological study is now commencing, in which
all the scientists in the country with applicable modelling or organisational skills are being coordinated by the Royal Society into a project aimed at a robust analysis of the so-called exit options. It is probably the case that most of us will be exposed to the virus sometime in the couple of years. So the sensible option is to try to defer its spread in order to (a) avoid a disastrous spike that will overwhelm the NHS within a couple of weeks, (b) allow the NHS to cope throughout the next 12 - 18 months before a vaccine is available, (c) defer the most serious cases (the most vulnerable people) until better understanding, treatment, equipment and capacity is available. As one of those people (almost 80, with several 'underlying conditions', though not in the worst 1.5 million) I'd much rather catch it then than now.
It seems pretty certain that herd immunity is the only
long term solution, as indeed it is for 'old' viruses like flu. Achieving this includes not only infection and recovery but, critically, vaccination. The question is, how to get there without breaking the NHS, which would lead to much greater loss of life.
It isn't yet at all clear what the exit strategy should be and all the options that anyone can think of are being examined. And the inputs will change dynamically as new drugs and therapies are tested. Your suggestion of blocking any entry from countries that have a resurgence will surely be one of the actions fed into the modelling, as will the enormous data sets now becoming available from other countries (with different demographics). And yes, some of the work packages will be critically to review all the others and to examine the assumptions.