A simple way to keep COVID-19 economy working
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As the coronavirus pandemic shuts down the world鈥檚 economies, stock markets plummet, and unemployment rises, policymakers will be forced to figure out how to contain the outbreak while preventing financial and economic collapse. Most economic proposals in developed countries focus on cash payments to people, deferred tax payments and business bailouts.
But biomedicine is critical to saving the economy, and of the three major biomedical channels now in play, the least important medically is the one that could impede an economic Armageddon.
It鈥檚 a test to check whether a person has had, recovered from, and thus become immune to COVID-19. Scientists say that low-symptom and symptomless cases exceed the symptomatic. When these asymptomatic people are over the infection, they could go to work 鈥 they will not infect those with whom they come into contact. But we need to know who they are.
Imagine that we could test the low-symptom and no-symptom cases for immunity today. This is not the widely discussed test for the illness itself. That test shows whether the virus is in one鈥檚 system, not whether it came, went and conferred immunity. Testing those who have been exposed, recovered, and are healthy could allow them to return to work and reopen businesses and institutions.
Immunity test
Initial public discussion of immunity testing has focused on how understanding COVID-19 immunity could lead to a vaccine or antiviral to treat the sick, and could tell us how widely the virus has spread. But a major and immediate economic use of an immunity test is that it can be deployed before we have a cure or a treatment. Initial research suggests that, as with other viral diseases, recovery from COVID-19 does indeed lead to post-illness immunity. This still needs to be fully confirmed 鈥 and, equally important, confirmed to be long-lasting. But such testing is now possible and, with a push, could be widely available.
That push could be well worth the effort, especially if the virus spreads. The public-health focus is on developing therapeutic drugs and a vaccine as soon as possible. But no widely available vaccine is expected to be available for 12-18 months.
If an immunity test were available, we鈥檇 check, and if we were immune, we would go out and back to the office. But, because we don鈥檛 know, we鈥檙e still staying at home.
I鈥檓 not an epidemiologist, although an epidemiologist at my university has raised similar possibilities. Much about COVID-19 is uncertain in public discourse and, so it seems, in experts鈥 knowledge. For example, the economic value of the immunity test depends on how many people get it without being symptomatic and on the overall level of infection in the coming months, neither of which we know now with any precision. An immunity test would have to be easy to use, because it鈥檚 the asymptomatic who would have to use it. Presumably, some of the first users would be businesses that would have to close unless they could be staffed with a handful of immune employees. Perversely, the worse the public-health situation is, the higher the economic value of the immunity test. If more people are infected, the economy is more disrupted, and the number of symptomless patients who need not stay at home rises as well.
Mark Roe is a professor at Harvard Law School and author of studies of the impact of politics on corporate organization and corporate governance in the United States and around the world. Copyright: Project Syndicate, 2020. www.project-syndicate.org
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