Contact tracing in Taiwan

Had en email from a friend in Taiwan this morning, which I doubt will ever make MSM.
I know Taiwan is about 1/6 of the size (with about 1/3 of the population) compared to the UK, but that does mean it is more densely populated.
Fair play to them if they have managed to contain it...

Things are still chugging along here - just over 400 cases and 6 deaths which is hard to believe, but there have been some scares - a naval vessel dispatched its crew thinking they were all fine only to realize 4 days later that some were sick. Massive follow-up of everywhere and everyone all 700+ had contact with in that 4 days. Plastered across the news were stories of who had sex with whom and where... still waiting to see whether the numbers will shoot up as a result.