Vaccines use bizarre stuff. We need a supply chain now

We've already seen the costs of supply-chain failures during the COVID-19 pandemic: Delays in the production of simple nasal swabs slowed testing by months even as the pandemic exploded in the U.S. The world is now eagerly awaiting a vaccine, and will need billions of doses as quickly as possible. If the vaccine supply chain fails, the economic and human cost of COVID-19 will be prolonged.