No One Is Protected Until We Are All Protected
Americans and others in the wealthiest countries may only have temporary protection against COVID unless there is more of a worldwide effort to vaccinate people in poorer countries. The science tells us that the longer the virus thrives and is able to mutate in countries with low vaccination rates the more the character of the pandemic changes.
The U.S. and other wealthy countries have hoarded millions of doses of vaccine and that has proven to be a very short-sighted way to deal with a pandemic. There are few places on the globe not affected by COVID and that means that we have to accept the fact that control of the virus depends on global cooperation. The needed level of cooperation has been slow to evolve.