Tashyboy
Please don’t ask to see my tatts 👍
Here is my review of the current state of play.
There has been a lengthy debate already about what the timing and nature of the first lockdown should or could have been, and the question of testing an contact tracing. Most public health doctors and virologists expected a second wave, because you can't suppress it hard enough for long enough to prevent one, but the severity of that second wave was always going to be affected by how well we had done with the first. Not well.
Now, what has changed?
Well, first, I think we know more about the disease. It was known from the outset that this wasn't a conventional pneumonia, at least not in the characteristic decline around day 7, it was an inflammatory condition similar to Acute Respiratory Distress Syndrome (ARDS), so a different approach to oxygenation and dealing with immune reactions are probably more effective. Normally in a pneumonia, you wouldn't damp immune response. That partly explains the lower death rate now. We now know that hydroxychloroquine is useless, remdesivir is of modest effect. Dexamethasone is useful for people who require oxygenation, but has a modest effect.
Second, the first wave cleared out a lot of older people, especially from care homes. The Dept of Health policy to push these people back untested to their care homes was disastrous, but as a result, the vulnerable population has changed to a less unfit one, so that probably also partly explains the lower death rate now.
Third, Covid appears to be changing a bit, to a form which is more transmissible but less severe. That may end up being no real gain, but it may explain why we are seeing more cases but proportionately fewer deaths. What we don't now if the sting in the tail of fewer deaths is more long term complications.
Fourth, long Covid. This refers to the persistence of symptoms in people who initially had mild-moderate disease. This is multi-organ and can include all sorts of stuff from fatigue (common) to psychotic symptoms (reflecting encephalitis), liver, kidney, heart and, in particular, thrombotic effects with micro clots in all sorts of organs with a range of clinical manifestations from minor to serious. I suspect this will be the long term legacy. Covid appears to affect many body systems and have multiple effects. I expect we will see an increase in autoimmune disease, ranging from Type I Diabetes to lupus, and possibly odd cancers and unusual genetic birth defects.
Fifth, vaccines. I am pretty upbeat on vaccines. There are multiple programmes in development, with a range of different mechanisms. None of them that I am aware of (apart from possibly the Russian one) use inactivated Covid. These development programmes have been the subject of feverish public interest with every detail picked over in the popular press. This has fuelled a certain amount of paranoia about the safety standards. Everyone is entitled to form their own view, but mine (based on my career in pharma) is that the regulators are able to balance the urgent need with the safety standards needed and I will therefore take the vaccine as soon as offered. The big challenge is administration. The job of making the vaccine is not a rate limiting step, but it takes a large effort to give to to millions of people. The recent Joint Committee for Vaccination and Immunisation recommendations suggest essentially that it will be given to over 50s, NHS and care home workers and specific highly vulnerable people first and then decisions made on others. Vaccines are likely to prevent disease in some people and reduce severity in others.
Sixth, lockdown. In my opinion (and other opinions are available), we needed a harder and earlier lockdown back in March, and we are now paying the price for that. The need to balance economy and health is, in my opinion, a false dichotomy. The two go hand in hand, and I think Get is slow coming round to this, so I expect a fairly hard lockdown this week in order to preserve some chance of a decent Christmas. But that Christmas will pose a further exposure risk, so I don't think we are done there, and will likely need to lockdown again in the new year. By then, we should be seeing vaccine coming through, so it may be the beginning of the end.
Seventh, herd immunity. This appears to have been the initial plan, and the Swedish plan too. This is highly problematic, for various ethical and practical reasons. Not the least of these is that it doesn't protect the shielded. Sporadic cases will still occur when shielded people encounter asymptomatic carriers, and there will still be quite a few of them, so vaccination is really the only solution for the shielded, and even that is not a guaranteed solution. We will, however, reach a position where the degree of natural infection, mostly in younger people, and the start of vaccination, add together to give an increasing proportion of the population that is able to function much closer to "normal", and eventually we will reach a tipping point where relative normality returns for most people.
cheers me man, ? greatly appreciated