Sweden has done nothing, taking a hands off approach to tacking the virus. In the UK, Boris was shaking hands just days before he was admitted to the hospital.
It isnt true Sweden has done nothing. They have honestly warned people about the virus, told the old to isolate, and given everyone advice how to behave to reduce spread. They have have created distancing measures to make sure that while cafes etc can stay open, they must observe precautions against spread (not including masks). What they have done is avoided the problem of how to get out of lockdown by never getting into it. Their economy has taken a little hit, but is basically all still operating. They started off being criticised for their death rate, but now cases are falling there too and their death numbers are looking better as others with lockdowns have been catching up.
Heres a link to a study done in Germany in a small town which suffered an outbreak of covid after the local Carnival.
https://www.ukbonn.de/C12582D3002FD...on_fatality_rate_of_SARS_CoV_2_infection2.pdf
For those of you pessimists about the disease, the official finding of this study is that 15% of the people were infected by covid, giving a 0.4% death rate.
However, I suggest the optimists amongst you read the study carefully. What they did was randomly pick 600 people from the local citizens register with different surnames and then add in their families, making about 1000 in all to study. Those who agreed to take part were then given PCR tests to see if they had active virus in them, and also two antibody tests specific for covid. They also looked at old PCR test results to see who had already tested positve before the study.
If anyone cares to look at the end of the study it has graphs of their data findings. One plots the two antibody results, one against the other. To be counted as having the virus, they said you had to be positive on both tests, and have antibodies above a certain level. But if you do look at that graph, you can see two data trends. One where people had both antibodies together, and they were high or low together forming a broad rising straight line. A second where people had IgA antibodies at lower or higher amounts, but IgG stayed low. Most of the results had low levels of both antibodies, but they fell on the straight line where the two were being produced in step.
Now the researchers discounted these as too low level. But how come they have covid antibodies at all? The researchers might argue the tests arent sensitive enough to pick out real low levels from random noise, But the alternative explanation is that almost everyone in the study was exposed to covid, otherwise they wouldnt have had any antibodies. So it isnt true 15% had it, more like 90%. Which knocks down the death rate to morelike 0.06%. Which is maybe about the maximum other places have found, and is maybe the worst case outcome.
In Germany there was no shortage of medical care, unlike New York, which probably meant more died who got ill in NY than in Germany.
What the study says is they proved 15% had the virus. What it doesnt say, is they did not prove another 70% did not have the virus.
To create herd immunity you need maybe 60% immune. So the big question is, are that 70% now immune also because they did have a minor infection, so minor it never led to creating much antibody.
If so, they are comfortably home and the epidemic is over.
There are other models. The R number for the disease is quoted around 2.5, but that is an average. The study showed a wide range of response to the virus, and it is entirely possible people with mild cases (or no symptoms at all) never spread it much at all either. So the real R would vary from person to person. The people who got it bad spreading a lot, others hardly at all. So the 15% confirmed immune might have been the most susceptible, who therefore also did the most spreading. Just knocking them out might have accounted for 30% - or more - of the spread rate. Add to that the 70% who have had some exposure, who might be wholly immune but who would be expected to get it even more mildy if again at all, and again you are home having achieved herd immunity.