In reply to <a href="https://macdailynews.com/2020/04/22/u-s-senator-demands-tim-cook-and-sundar-pichai-be-personally-accountable-for-coronavirus-contact-tracing-privacy/#comment-2190508">JRock</a>.
@Jrock: Using a 1 to 1 case study doesn’t have the statistical force to finish with, “conclusive”.
The only shared characteristics of the “subjects” is the virus itself.
The infection in SK gained strength in a very specific population, that was youthful and limited in geography. The limited scope enabled zeroing in more directly on the infection and the youthfulness is statistical benefit overall.