A worker uses a microscope to examine yeast and bacteria in a sample during the Grupo Modelo SA Corona brand beer brewing process at the Cerveceria Yucateca Anheuser-Busch InBev SA facility in Merida, Mexico. (Photographer: Mauricio Palos/Bloomberg)

Germ-Killing Brands Now Want to Sell You Germs

Apr 22 2019, 9:00 AMApr 22 2019, 8:37 PMApril 22 2019, 9:00 AMApril 22 2019, 8:37 PM

(Bloomberg Businessweek) -- It was a snowy week in February 2009 when David Whitlock packed up his three-bedroom apartment near Cambridge, Mass., and moved into his van. Then 54 years old, the inve...