/em> a symptomatic case&#39;s recent close contacts... we stop the spread, by staying one step ahead!</p>

	<p><img src="pics/timeline3.png" alt=""></p>

	<p>This is called <strong>contact tracing</strong>. It&#39;s an old idea, was used at an unprecedented scale to contain Ebola<sup id="fnref24"><a href="#fn24" rel="footnote">24</a></sup>, and now it&#39;s core part of how Taiwan &amp; South Korea are containing COVID-19!</p>

	<p>(It also lets us use our limited tests more efficiently, to find pre-symptom