In Depth: Vaccinating the world against Covid--the complications and challenge

In delivering vaccines, pharmaceutical companies aided by monumental government investments have given humanity a miraculous shot at liberation from the worst pandemic in a century.

But wealthy countries have captured an overwhelming share of the benefit. Only 0.3 percent of the vaccine doses administered globally have been given in the 29 poorest countries, home to about 9 percent of the world’s population.

Vaccine manufacturers assert that a fix is already at hand as they aggressively expand production lines and contract with counterparts around the world to yield billions of additional doses. Each month, 400 million to 500 million doses of the vaccines from Moderna, Pfizer and Johnson & Johnson are now being produced, according to an American official with knowledge of global supply.

But the world is nowhere close to having enough. About 11 billion shots are needed to vaccinate 70 percent of the world’s population, the rough threshold needed for herd immunity, researchers at Duke University estimate. Yet, so far, only a small fraction of that has been produced. While global production is difficult to measure, the analytics firm Airfinity estimates the total so far at 1.7 billion doses.

The problem is that many raw materials and key equipment remain in short supply. And the global need for vaccines might prove far greater than currently estimated, given that the coronavirus presents a moving target: If dangerous new variants emerge, requiring booster shots and reformulated vaccines, demand could dramatically increase, intensifying the imperative for every country to lock up supply for its own people.

The only way around the zero-sum competition for doses is to greatly expand the global supply of vaccines. On that point, nearly everyone agrees.

But what is the fastest way to make that happen? On that question, divisions remain stark, undermining collective efforts to end the pandemic. ...

Many public health experts say that patent waivers will have no meaningful effect unless vaccine makers also share their manufacturing methods. Waivers are akin to publishing a complex recipe; tech transfer is like sending a master chef to someone’s kitchen to teach them how to cook the dish. ...”

Even with waivers, technology transfers and expanded access to raw materials, experts say it would take about six months for more drug makers to start churning out vaccines.

The only short-term fix, they and European leaders say, is for wealthy countries — especially the United States — to donate and export more of their stock to the rest of the world. The European Union allowed the export of hundreds of millions of doses, as many as it kept at home, while the United States held fast to its supply. ...