The rate of hospital-onset methicillin-resistant staphylococcus aureus bloodstream infections declined 17.1 percent per year between 2005 and 2012, but did not change significantly between 2013 and 2016, according to a Vital Signs report released recently by the Centers for Disease Control and Prevention. The rate of community-onset methicillin-susceptible staph infections increased 3.9 percent annually between 2012 and 2017, possibly due to the opioid crisis, with infections in people who inject drugs climbing from 4 percent in 2011 to 9 percent in 2016, CDC said.