There have been deaths every day.
WHO has a daily situational report.
https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports
WHO: Of the 794 cases reported outside China, 26 were detected while apparently asymptomatic.
I think it is pretty much a fact that the virus can be spread without symptoms.
As for the “24 days”, I’m more suspicious of that claim until confirmed by cases outside of China.
Thanks