Replying to
elbows
Setting aside the market forces etc (such as in the actual markets) that cause complacency and failings, people who really understand what could happen will not be complacent and will - as you say - be better able and more likely to take all necessary measures to get ahead of an infection. But can you imagine what would happen if some kind of deadly respiratory virus gets a toehold while people are gathering for the Hajj or for the Kumbh Mela. It would be impossible to persuade people not to travel, and they gather in huge numbers, in close proximity. And then they all go home again.
The Chinese government, because of their powers, have been able to shut down entire cities and transport routes, but would the same be possible in India? The Kumbh Mela is so loose and baggy, and so huge, that I doubt it could be effectively shut down if some virus were detected in, say, the preceding fortnight.
If something (like with this present coronvirus) has a fairly long and asymptomatic incubation period, just the European festival season could enable it to get a toehold. A respiratory virus with a significant risk of cytokine storms in the young and healthy could travel in those youngsters while they're immunologically on the back foot as a result of lack of sleep and booze/drug comedowns, taking it from the festivals back to the cities.
If someone went to Hajj and didn't get MERS - or did and didn't really struggle with it, or did struggle or even died of it but no one in their village realised it was a big deal - are they more likely to be more dismissive of concerns another time? Does that make the next time more problematic? The Hajj cough is a regular and growing concern, with a significant uptick of TB and pneumonia amongst pilgrims every year. It's not hard to imagine some kind of URTI taking evolutionary advantage of such a gathering, and it would be too late to contain it by the time everyone went home.
These are exactly the questions epidemiologists are asking, of course. But not everyone has the same kind of overview or perspective that is being seen on this thread. How many people around the world even know about the Hajj cough, or about Kumbh Mela. Crowds gathering for the funeral procession of Suleimani, or the Hong Kong protests, or the Sardines gatherings in Italy, any of these could kick off a deadly virus. Would people forgo the gathering if there was a vague rumour of an URTI going round?
I'm not trying to be a doomsayer here; I really really hope that SARS and MERS and Ebola and this current problem will make us all think carefully about the implications in the future. But I can't shake this feeling...