That feedback loop is why need to have widespread testing and contact tracing. First patient may take time to show symptoms but then you test everyone they had

That feedback loop is why need to have widespread testing and contact tracing. First patient may take time to show symptoms but then you test everyone they had contact with and catch positives before they show symptoms or are asymptomatic. Also important is quarantining anyone with symptoms until tests prove they are negative. South Korea and Taiwan show that this kind of control is possible.