Drugmakers see long road ahead in coronavirus vaccine race

FILE PHOTO: The GlaxoSmithKline (GSK) logo is seen on top of GSK Asia House in Singapore, March 21, 2018. REUTERS/Loriene Perera

(Reuters) - Drugmakers racing to find a vaccine or effective treatment for the deadly new coronavirus in China cautioned that they have a long way to go.

That runs counter to reports of a supposed "breakthrough" that on Wednesday boosted financial markets and spurred optimism not necessarily backed by reality.