A newborn has its umbilical cord cut after birth in a Nigerian hospital. In a contest last week, MBA students came up with plans to get moms and dads to use an antiseptic on the cord stump to ward off infection. Courtesy of Karen Kasmauski/USAID's flagship Maternal and Child Survival Program hide caption
Four days after Rory Staunton cut himself in gym class, he died from septic shock. Courtesy of Rory Staunton Foundation hide caption
Brazilian soldiers go house to house as they attempt to eradicate the larvae of the mosquito that causes the Zika virus. Mario Tama/Getty Images hide caption
A copper bedrail can kill germs on contact. Courtesy of CopperBioHealth hide caption