> It's really hard to buy this notion. 3 days is not long enough for symptoms to manifest after infection. So in your previous comment you alluded to the idea

> It's really hard to buy this notion. 3 days is not long enough for symptoms to manifest after infection. So in your previous comment you alluded to the idea that infections can creep in to a community where it has been previously eradicated. The virus wouldn't really be dangerous at all if we knew that this was happening in real-time, because we could just isolate every case. The reason the virus is dangerous is because it rapidly spreads undetected, and by the time we find out things could already be pretty bad. The point of the immediate lockdown isn't that it will inherently prevent spread for long enough the virus dies off - it's just to give the contact tracing teams enough time to find every single person who has interacted with any single person that has interacted with any known case. Then all of those people have to do a proper quarantine (usually 14 days) and get tested regularly. Once you've done that, you wait a couple of days to see if any other seemingly random cases appear out of nowhere, and if they don't, everyone else can be assumed safe to go out as they'd please. > I looked at the aerial photographs. Chinese, Europeans, coastal Americans, would have a hard time thinking of such a place as "dense" or "urban". The trick here is that no-one lives in the areas that no-one lives in, so they're not really relevant. Yes, the desert 100km away from Adelaide is empty. But people travel by plane to Melbourne or Sydney, not by wandering around the desert - Australia has one of the most urban populations of any country on the planet. You wouldn't say that Malé isn't dense or urban just because it's surrounded by water, and indeed that characteristic has not helped the Maldives at all when it comes to COVID-19. > They're lying. About having (previously) eradicated COVID in Wuhan? Definitely not. Just ask anyone who actually lives there - life returned to complete normal after a couple of months. If COVID was still present in a megacity with absolutely no restrictions, everyone in the city would have stories of friends and relatives dying. That was happening in February. It wasn't happening in May.