New data buoy hopes for promising malaria vaccine—but questions remain science.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.org Daily Mail and Mail on Sunday newspapers.
AstraZeneca Plc's ambitions for developing an easier formulation of its Covid-19 vaccine one that might help curb contagion as well suffered a setback Monday as the nasal spray failed in an early test.