RadioMD News... I'm John Byrd.The FDA has recommended that the entire nation's blood supply be routinely screened for the Zika virus. The recommendation is designed to further protect those who get donated blood. Americans pay more than double what other nations pay for drugs, finds a new study. Lack of government oversight and intervention were cited as primary culprits in keeping prices artificially high.And... are you frightened to visit the dentist? It's the needles, isn't it? That may soon change as the FDA has approved a new anesthetic that can be administrated in a nasal spray. Almost 90% of patients report results comparable to receiving an injection of a numbing agent. At the moment, the nasal spray version is only available to adults, but scientists are working on a version that can be used safely for children as well. Now that's news that makes us smile. For RadioMD News, this is John Byrd. Hear health talk interviews with top experts at RadioMD dot com.