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Some misconceptions and the data that contradicts them:
1) It's OK to just quarantine the elderly and vulnerable and let the others out, for herd immunity.
Only one country has tried this, of the 214 countries with COVID-19 outbreaks: Sweden. It's backfiring. Their death toll is now 11 times higher than neighboring Norway. And it's frequently understood that Sweden is not doing any social distancing. Not really. Colleges and high schools are closed. Gatherings of more than 50 people are forbidden. People are being encouraged to work from home and refrain from non-essential travel, and people are encouraged to stay 2 meters from each other (and Swedes are usually good at following governmental requests). Still, since they didn't lock down completely like Norway, their death toll is 11 times higher. Presumably it would be even higher without any containment measured whatsoever. Herd immunity may also be a fallacy. The Swedes are expecting that it would work if 60% of them get the virus... but updated R0 numbers suggest that one needs 95% for the SARS-CoV-2 to be contained. While here people are protesting the lockdown, in Sweden they are protesting the absence of one.
2) The virus only kills people who were about to die anyway.
This is contradicted by the surge in all-cause deaths and comparison with similar periods last year. In New York, for example, the all-cause death rate is 3 times higher than the average for the same period in the past. That means, no, the surge of deaths to the coronavirus is NOT because people would have died anyway, or else, the all-cause rates would be only slightly bigger, not three times bigger. The same surge has been observed in all 7 states that have had significant outbreaks.
3) The virus is harmless for young or younger people.
Well, think again. Now there are reports popping up everywhere of severe consequences for young people: blood clots leading to stroke (often fatal), frost-bitten-like extremities, Kawasaki disease (an inflammation of blood vessels that decreases circulation to the heart), all of these happening in children, adolescents, and young adults, and permanent lung damage of up to 30% of lung capacity happening in adults aged 40 to 59. I mean, come on, just a little flu? Since when does the flu routinely cause these problems?
4) We can just test people for antibodies, give them certificates of immunity, and let them go back to work, or use rapid antigen tests for tracing
Antigen tests have been so faulty, that they have been capturing only 34% to 80% of previously infected people (therefore, huge number of false positives); on average, a 50-50 proposition so they wouldn't help that much. Anitbody tests have the problem of false positives, which is even worse because it would release a susceptible person into the fray, with an unjustified sense of confidence. And then, we don't know at all if there is lasting immunity after people recover from COVID-10. In 14% of them antibodies can't even be found... Others have just moderate titers, and others do have high titers but who knows how long they'll last? The virus is too novel to allow for an answer to this question.
5) In the US the lockdown was an over-reaction because only the elderly and infirm need to be sequestered
See #1 and #3 but then also consider this for the specific case of the US: probably at least half of our population (likely way more) is made of carriers of underlying conditions. Almost 40% of us are obese (highest rate in the world). 100 million have hypertension and 40% of those don't even know that they have it. 47 million seniors. 26 million diabetics. And so on and so forth, millions of other forms of heart disease, asthma, COPD, heavy smokers, cancer survivors... And then, add to that, the people who take care of them or live with them: release the latter into the fray, and they will bring the virus to the susceptible ones. If we were to do this, we'd need to sequester probably two thirds of our population anyway... no advantage over what we are doing, which concerns 60% of the population because 40% are considered to be essential workers.
Opinion | How Sweden Is Dealing With the Coronavirus - The New York Times
U.S. Coronavirus Death Toll Is Far Higher Than Reported, C.D.C. Data Suggests - The New York Times
Kawasaki disease: Rare inflammatory syndrome seen in US child with Covid-19 - CNN
Coronavirus testing: What to know about the three main types of tests - CNN
1) It's OK to just quarantine the elderly and vulnerable and let the others out, for herd immunity.
Only one country has tried this, of the 214 countries with COVID-19 outbreaks: Sweden. It's backfiring. Their death toll is now 11 times higher than neighboring Norway. And it's frequently understood that Sweden is not doing any social distancing. Not really. Colleges and high schools are closed. Gatherings of more than 50 people are forbidden. People are being encouraged to work from home and refrain from non-essential travel, and people are encouraged to stay 2 meters from each other (and Swedes are usually good at following governmental requests). Still, since they didn't lock down completely like Norway, their death toll is 11 times higher. Presumably it would be even higher without any containment measured whatsoever. Herd immunity may also be a fallacy. The Swedes are expecting that it would work if 60% of them get the virus... but updated R0 numbers suggest that one needs 95% for the SARS-CoV-2 to be contained. While here people are protesting the lockdown, in Sweden they are protesting the absence of one.
2) The virus only kills people who were about to die anyway.
This is contradicted by the surge in all-cause deaths and comparison with similar periods last year. In New York, for example, the all-cause death rate is 3 times higher than the average for the same period in the past. That means, no, the surge of deaths to the coronavirus is NOT because people would have died anyway, or else, the all-cause rates would be only slightly bigger, not three times bigger. The same surge has been observed in all 7 states that have had significant outbreaks.
3) The virus is harmless for young or younger people.
Well, think again. Now there are reports popping up everywhere of severe consequences for young people: blood clots leading to stroke (often fatal), frost-bitten-like extremities, Kawasaki disease (an inflammation of blood vessels that decreases circulation to the heart), all of these happening in children, adolescents, and young adults, and permanent lung damage of up to 30% of lung capacity happening in adults aged 40 to 59. I mean, come on, just a little flu? Since when does the flu routinely cause these problems?
4) We can just test people for antibodies, give them certificates of immunity, and let them go back to work, or use rapid antigen tests for tracing
Antigen tests have been so faulty, that they have been capturing only 34% to 80% of previously infected people (therefore, huge number of false positives); on average, a 50-50 proposition so they wouldn't help that much. Anitbody tests have the problem of false positives, which is even worse because it would release a susceptible person into the fray, with an unjustified sense of confidence. And then, we don't know at all if there is lasting immunity after people recover from COVID-10. In 14% of them antibodies can't even be found... Others have just moderate titers, and others do have high titers but who knows how long they'll last? The virus is too novel to allow for an answer to this question.
5) In the US the lockdown was an over-reaction because only the elderly and infirm need to be sequestered
See #1 and #3 but then also consider this for the specific case of the US: probably at least half of our population (likely way more) is made of carriers of underlying conditions. Almost 40% of us are obese (highest rate in the world). 100 million have hypertension and 40% of those don't even know that they have it. 47 million seniors. 26 million diabetics. And so on and so forth, millions of other forms of heart disease, asthma, COPD, heavy smokers, cancer survivors... And then, add to that, the people who take care of them or live with them: release the latter into the fray, and they will bring the virus to the susceptible ones. If we were to do this, we'd need to sequester probably two thirds of our population anyway... no advantage over what we are doing, which concerns 60% of the population because 40% are considered to be essential workers.
Opinion | How Sweden Is Dealing With the Coronavirus - The New York Times
U.S. Coronavirus Death Toll Is Far Higher Than Reported, C.D.C. Data Suggests - The New York Times
Kawasaki disease: Rare inflammatory syndrome seen in US child with Covid-19 - CNN
Coronavirus testing: What to know about the three main types of tests - CNN