It also would need to be done worldwide in a synchronized way or you'd still be spreading it via travel. Look at places like Singapore where they were able to arrest the community spread but now are seeing cases crop up from incoming travelers.
90% of S'pore's imported cases in recent days did not show symptoms at checkpoints
In line with stiffer border controls to help stop the spread of the coronavirus, travellers entering Singapore, regardless of where they come from, are given a 14-day stay-home notice
Nine in 10 imported Covid-19 cases in Singapore between Wednesday (March 18) and Friday last week did not show symptoms, like fever, when they had passed through the border checkpoints.
Travellers into Singapore have to walk past thermal scanners, which would help identify those who are feverish. Those who are observed to be so, or have other respiratory symptoms will be required to do a Covid-19 swab test.
Singapore had 119 cases altogether in those three days, with 87 of them being imported cases, the ministry's figures show.
There have been mounting concerns that people with coronavirus may not show symptoms, such as fever, dry cough and shortness of breath.
Scientists are calling for urgent studies to determine the proportion of people with coronavirus who show no, or delayed, symptoms, amid fears that the number of silent carriers may be greater than previously thought.
See the various imported clusters:
https://infographics.channelnewsasi...??cid=h3_referral_inarticlelinks_24082018_cna
(In two cases, one traveller then proceeded to infect like 15 to 20 other contacts.)
We are about 2 to 2/12 months ahead of the American curve. This is our 2nd wave. The initial1st wave is bad enough on the economy but if you are going to shut down every person from travelling in or out of the country, it would be devastating for a trading nation like Singapore.
Global cooperation is the only way to do this but that requires either documented quarantine prior to flying or at the hotel abroad. Plus possible rapid tests with real-time results. I know of a couple of companies in Korea and in Europe that have them but its like 20 to 45mins on the spot and I am not sure about their accuracy. Nevertheless, imagine the queues at the immigration?
Or any flights within the EU or the States? Intra-State travel like banning all from the most infected state ie NY to anywhere within the States? Get them tested before flying?
If some variance of the Singapore's 2nd Wave is to hit the rest of the world a few months later, the tightest of cooperation is required. Otherwise, this pandemic will carry on easily for another year or so when the vaccine is expected.
Problem is that by then, all ICUs across the world would be hit past their critical capacity levels -- and by then you have an Italian meltdown scenario but across multiple nations.
Also, what does the American Gov't do about the under/uninsureds? Trying to vaccinate 330million people is quite an endeavour. You still have people who don't believe in vaccinations who then could later be silent carriers.