It’s like a DNA test of my house, says Rob Dunn, a 43-year-old American biologist who has come to my house in Copenhagen to hunt microbial life. He swears and smiles, even whoops with delight: “This dust sample contains bacteria, your body microbes, your wife’s body microbes, your child’s body microbes. I suspect our 110-year-old house, shared with another family, is a fertile hunting ground, and Dunn seems optimistic. He says fewer than 100 species of bacteria, protists and viruses cause nearly all infectious diseases today. “You have a lot of species that I think of as being part of a healthy house,” Dunn says.

Source: The Guardian February 28, 2019 06:00 UTC