The government had agreed to halt the reforms and discuss them again with the industry and the parliament once the coronavirus outbreak had stabilised.
The FDA is prepared to authorize a coronavirus vaccine before late-stage Phase Three clinical trials are complete, as long as officials are convinced that the benefits outweigh the risks.
Many people already have antibodies against Ad5, which could cause the immune system to attack the vector instead of responding to the coronavirus, making these vaccines less effective.
South Korea reported 238 new cases as of midnight Sunday, mostly from Seoul and surrounding regions, the 18th consecutive day of triple-digit rises in daily infections.