In the Oct. 28 SN: Real-life vampires, the ultimate flu shot, no rings for Pluto, tsunami debris stowaways, jellyfish flouts sleep stereotypes, honey carries pesticides, teen concussion stats, a shape-shifting robot and more.
POULTRY PROBLEMS So far, most cases of human H7N9 infection have come from exposure to birds, often in live poultry markets. Here, epidemiologists collect samples at a market in Dongguan, China, in 2014.
CDC/Shuqing Zhao, China
ONE AND DONE The flu kills tens of thousands of people in the United States each year, and protection is made harder by the need for an annual shot. A onetime vaccine is getting closer to reality.
OFFENSIVE MEASURES A combination of powerful antibodies might be able to stop HIV (yellow) before it infects, as is happening to a T cell (blue) in this colorized micrograph.