A Chinese woman infected with the new coronavirus showed a dramatic improvement after she was treated with a cocktail of anti-virals used to treat flu and HIV, Thailand’s health ministry said Sunday.

The 71-year-old patient tested negative for the virus 48 hours after Thai doctors administered the combination, doctor Kriengsak Attipornwanich said during the ministry’s daily press briefing.

“The lab result of positive on the coronavirus turned negative in 48 hours,” Kriengsak said.