Carl Zimmer writes a history of aerobiology in “Air-borne: The Hidden History of the Life We Breathe.”.

As France examines why its vaccination campaign has started so slowly, the answer lies partly in the red tape and the governments decision to start with perhaps the toughest group to reach: the elderly in nursing homes. As France tries to figure out why its vaccination campaign launched so slowly, the answer lies partly in forests of red tape and the decision to prioritize vulnerable older people in nursing homes. They are perhaps the toughest group to start with, because of the need for informed consent and difficulties explaining the complex science of fast-tracked vaccines. Some families have said no, and some want to wait a few months to see how vaccinations unfold before deciding. They need explications and to be reassured.”France prioritized nursing homes because they have seen nearly one-third of its deaths.