What Follows from Lab Leak?

Does it matter whether SARS-CoV-2 leaked from a lab in Wuhan or had natural zoonotic origins? I think on the margin it does matter.

First, and most importantly, the higher the probability that SARS-CoV-2 leaked from a lab the higher the probability we should expect another pandemic.* Research at Wuhan was not especially unusual or high-tech. Modifying viruses such as coronaviruses (e.g., inserting spike proteins, adapting receptor-binding domains) is common practice in virology research and gain-of-function experiments with viruses have been widely conducted. Thus, manufacturing a virus capable of killing ~20 million human beings or more is well within the capability of say ~500-1000 labs worldwide. The number of such labs is growing in number and such research is becoming less costly and easier to conduct. Thus, lab-leak means the risks are larger than we thought and increasing.

A higher probability of a pandemic raises the value of many ideas that I and others have discussed such as worldwide wastewater surveillance, developing vaccine libraries and keeping vaccine production lines warm so that we could be ready to go with a new vaccine within 100 days. I want to focus, however, on what new ideas are suggested by lab-leak. Among these are the following.

Given the risks, a “Biological IAEA” with similar authority as the International Atomic Energy Agency to conduct unannounced inspections at high-containment labs does not seem outlandish. (Indeed the Bulletin of Atomic Scientists are about the only people to have begun to study the issue of pandemic lab risk.) Under the Biological Weapons Convention such authority already exists but it has never been used for inspections–mostly because of opposition by the United States–and because the meaning of biological weapon is unclear, as pretty much everything can be considered dual use. Notice, however, that nuclear weapons have killed ~200,000 people while accidental lab leak has probably killed tens of millions of people. (And COVID is not the only example of deadly lab leak.) Thus, we should consider revising the Biological Weapons Convention to something like a Biological Dangers Convention.

BSL3 and especially BSL4 safety procedures are very rigorous, thus the issue is not primarily that we need more regulation of these labs but rather to make sure that high-risk research isn’t conducted under weaker conditions. Gain of function research of viruses with pandemic potential (e.g. those with potential aerosol transmissibility) should be considered high-risk and only conducted when it passes a review and is done under BSL3 or BSL4 conditions. Making this credible may not be that difficult because most scientists want to publish. Thus, journals should require documentation of biosafety practices as part of manuscript submission and no journal should publish research that was done under inappropriate conditions. A coordinated approach among major journals (e.g., Nature, Science, Cell, Lancet) and funders (e.g. NIH, Wellcome Trust) can make this credible.

I’m more regulation-averse than most, and tradeoffs exist, but COVID-19’s global economic cost—estimated in the tens of trillions—so vastly outweighs the comparatively minor cost of upgrading global BSL-2 labs and improving monitoring that there is clear room for making everyone safer without compromising research. Incredibly, five years after the crisis and there has be no change in biosafety regulation, none. That seems crazy.

Many people convinced of lab leak instinctively gravitate toward blame and reparations, which is understandable but not necessarily productive. Blame provokes defensiveness, leading individuals and institutions to obscure evidence and reject accountability. Anesthesiologists and physicians have leaned towards a less-punitive, systems-oriented approach. Instead of assigning blame, they focus in Morbidity and Mortality Conferences on openly analyzing mistakes, sharing knowledge, and redesigning procedures to prevent future harm. This method encourages candid reporting and learning. At its best a systems approach transforms mistakes into opportunities for widespread improvement.

If we can move research up from BSL2 to BSL3 and BSL4 labs we can also do relatively simple things to decrease the risks coming from those labs. For example, let’s not put BSL4 labs in major population centers or in the middle of a hurricane prone regions. We can also, for example, investigate which biosafety procedures are most effective and increase research into safer alternatives—such as surrogate or simulation systems—to reduce reliance on replication-competent pathogens.

The good news is that improving biosafety is highly tractable. The number of labs, researchers, and institutions involved is relatively small, making targeted reforms feasible. Both the United States and China were deeply involved in research at the Wuhan Institute of Virology, suggesting at least the possibility of cooperation—however remote it may seem right now.

Shared risk could be the basis for shared responsibility.

Bayesian addendum *: A higher probability of a lab-leak should also reduce the probability of zoonotic origin but the latter is an already known risk and COVID doesn’t add much to our prior while the former is new and so the net probability is positive. In other words, the discovery of a relatively new source of risk increases our estimate of total risk.