Rich countries get first dibs in vaccine race
The U.S., Britain, Canada and others are rolling out coronavirus vaccines after ordering doses that far outnumber their populations. They’ve already laid claim to more than half of the doses coming on the market through 2021, as many poorer nations struggle to secure enough.
In the developing world, some countries may be able to vaccinate, at most, 20 percent of their populations in 2021, with some reaching immunity as late as 2024.
In many cases, the U.S. made its financial support for the vaccine’s development conditional on getting priority access. The country is heading toward authorizing another vaccine this week, from Moderna.
Suppliers: India is on track to produce more vaccine doses next year than any other country. China, which has the world’s third-biggest vaccine manufacturing capacity, has indicated that it intends to make its vaccines available to developing countries. AstraZeneca and Novavax, whose vaccines have yet to be cleared, have promised hundreds of millions of doses to poor countries.
Here are the latest updates and maps of the pandemic.
In other developments:

■ Russia has released additional results from a clinical trial of its leading coronavirus vaccine, called Sputnik V, showing an efficacy rate of 91.4 percent. AstraZeneca opened talks this month about combining efforts.

■ Chinese authorities are investigating a cargo pilot in Sichuan Province who tested positive for the virus shortly after attending a 300-person wedding, just days after returning from a trip to the U.S.
The New York Times