Vaccine inequality, wily variants: Covid's deadliest phase may be here soon

Like all pandemics, this one will end either with millions - maybe billions - being infected or being vaccinated. This time, world leaders have a choice, but little time to make it

If world leaders don’t act now, the end of the Covid pandemic may come with a horrible form of herd immunity, as more transmissible variants that are taking hold around the world kill millions.

There’s troubling new evidence that the B.1.617.2 variant, first identified in India, could be far more transmissible than even the B.1.1.7 variant, first identified in Britain, which contributed to some of the deadliest surges around the world.

In countries with widespread vaccination, like the United States and Britain, we can expect that Covid cases, hospitalizations and deaths will continue to decline or stay low, especially because