infection

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