Everyone gets the flu. Some are more likely to die from it, reports New Scientist. A study published in The Journal of Infectious Diseases looked at death certificates and family records going back 100 years and found that blood relatives of flu victims were more likely to die than nonrelatives, even during different flu outbreaks. Risks increased with relatedness: siblings were 74% more likely to die than unrelateds; blood uncles 22%; first cousins 16%. Victims' spouses were also more likely to die, probably because they lived in the same house. The team is tracking relatives of people who died recently to see if they too are at increased risk, and if flu vaccinations help . Good question.
Julia Whitty is Mother Jones' environmental correspondent. You can read from her new book, The Fragile Edge, and other writings, here.