This is a new virus and even the scientists and medical people don't understand it fully yet. I read somewhere that it had even been suggested that there are three different strains of the virus, which might explain why some people hardly know they are ill whereas others, sometimes with no known underlying health issues, become seriously ill or even die.
It has also been reported that some of the "antibody" testing kits may not be reliable and that, in any event, it is not known for sure whether people who contract the virus will be immune on a permanent basis, though it is believed they may be immune in the short term.
We do not know whether the Swedish approach of carrying on almost as normal is the right thing to do or if, at some point, there will be an explosion of cases, which they will be unable to deal with. We can't necessarily extrapolate from one country whether the same procedures will work in another. Sweden, for instance, is not very densely populated. Time will tell.
I don't think it's been fully explained why 2 metres is considered to be a relatively "safe" distance. If it is, as I read somewhere, to avoid breathing in possible cough and sneeze droplets, then that seems not far enough. Most sites say that cough droplets can travel as far as 6 metres and sneeze droplets 8 metres. But when you're out, is it a normal occurrence for people to sneeze and cough very near to you? It is said that, other than that particular circumstances, the virus is not air borne but is only transferred by touch, to mouth, eyes or nose.
It is very heartening that many, many people have volunteered, sometimes at a risk to themselves, to help people in all sorts of ways and in all sorts of situations. What I find a little depressing though is the obvious relish with which some people seem to be monitoring the behaviour of others and suggesting they are responsible for "killing" people.
But some of these critics are very reluctant to be at all critical of our government's role in all this. Most people appreciate that any government would have found this situation unbearably challenging. It must have been difficult to decide what approach should be used, given that so many knowledgeable and highly qualified epidemiologists and other experts had different opinions as to what strategy should be used.
However, there are other areas where I believe it is justifiable to criticise. The government had been warned on many occasions that an epidemic or pandemic was very likely to occur within the next few years, that we were inadequately prepared in terms of planning, equipment, staffing and any number of other issues, and that steps should be taken to rectify our unpreparedness. Nothing was done. At the outset, Boris Johnson and his colleagues instructed people to wash their hands, to maintain a distance of 2 metres from other people, not to shake hands and to generally avoid situations where several people would be present (such instructions that they did not necessarily take heed of themselves). Yet at quite a late stage Johnson made the decision to close pubs, restaurants, gyms, libraries, hairdressers, nail bars, beauty salons, theatres, cinemas, clubs, etc, etc. which, if the information regarding the main means of transfer being touch is reliable, were the most likely places for people to be in close, and in some cases very close, proximity.