If the entire country had received shots at the same rate as the Northeast or California, the current Delta wave would be a small fraction of its current size. Delta is a problem. Vaccine hesitancy is a bigger problem.
The science, in brief
These numbers help show why the talking point about viral loads was problematic. It was one of those statements that managed to be both true and misleading. Even when the size of the viral loads are similar, the virus behaves differently in the noses and throats of the vaccinated and the unvaccinated.
In an unvaccinated person, a viral load is akin to an enemy army facing little resistance. In a vaccinated person, the human immune system launches a powerful response and tends to prevail quickly — often before the host body gets sick or infects others. That the viral loads were initially similar in size can end up being irrelevant.
I will confess to one bit of hesitation about walking you through the data on breakthrough infections: It’s not clear how much we should be worrying about them. For the vaccinated, Covid resembles the flu and usually a mild one. Society does not ground to a halt over the flu.
In Britain, many people have become comfortable with the current Covid risks. The vaccines make serious illness rare in adults, and the risks to young children are so low that Britain may never recommend that most receive the vaccine. Letting the virus continue to dominate life, on the other hand, has large costs.
“There’s a feeling that finally we can breathe; we can start trying to get back what we’ve lost,” Devi Sridhar, the head of the global public health program at the University of Edinburgh, told The Times.