Things sure doesn't look good. Have to do the contact tracing and isolation. How far it's practical is the issue. There could be a Superspreader(s) involved. Over the world the analysis of cluster stats show that 19% of cases were responsible for 80% of all Covid transmissions. About 69% of cases did not transmit to anyone.
Let's hope for the best. Only rapid tracing and quarantine can help. Also other large scale social activities has to be curbed immediately.