Data continues to accumulate for the hypothesis that superspreading events drives the pandemic. As few as 1% (!) of infected people caused 80% of secondary infections in Israel. If this holds up, it will have interesting political consequences in America https://www.medrxiv.org/content/10.1101/2020.05.21.20104521v1.full.pdf …
You're thinking of this as the root of a tree of infections. But this means something different, that very few infected people will go on to infect anyone else, but a small number will directly infect many.