Des Moines Register: Across the country, many companies, most notably Twitter, Google, Facebook and Amazon, are recommending working at home for their staff to lower coronavirus risks. So far, however, major Iowa employers surveyed have yet to take such measures following the announcement that presumptive cases of COVID-19 had been diagnosed in the state. Several Des Moines-area companies said they have no plans to ask their office employees to work from home but are monitoring advice from the CDC and other government agencies. If you’re anticipating needing to work from home, here are some things to know.