The fourth surge is upon us. This time, it's different.

The good news is that this one is different. We now have an unparalleled supply of astonishingly efficacious vaccines being administered at an incredible clip. If we act quickly, this surge could be merely a blip for the United States. But if we move too slowly, more people will become infected by this terrible new variant, which is acutely dangerous to those who are not yet vaccinated.

The United States has an advantage that countries such as Canada, France, Germany, and Italy, who are also experiencing surges from this variant, don’t. The Moderna, Pfizer, and Johnson & Johnson vaccines work very well against this variant, and the U.S. has been using them to vaccinate more than 3 million people a day. That’s more than 4 percent of our vaccine-eligible population every three days. An astonishing 73 percent of people over 65, and 36 percent of all eligible adults in the country, have already received at least one dose. More than 50 million people are now considered fully vaccinated, having received either their booster dose or the “one and done” Johnson & Johnson shot. Many states have already opened up vaccination to anyone over 16, and everyone eligible is expected to have a chance to get at least a first dose no later than May.

In addition, the United States has had one of the largest outbreaks in the world. This has caused us immense suffering and loss, but it also means that we are now less vulnerable to future waves. So far, 30 million people in the United States have had a confirmed SARS-CoV-2 infection, although the real (unmeasured) number is perhaps as high as 100 million.