Baloxavir, to be sold by Genentech under the brand name Xofluza, is the only single-dose oral medicine approved to treat the flu. It has been shown to significantly reduce the duration of symptoms.

Lead author Juergen Pipper says a single test may cost as little as 20 to 50 cents, compared to $20-$50 for existing kits, Bloomberg News reports. Monday's announcement has implications for ...