A mix of rapid urbanization and wild animal consumption (either as bushmeat or traditional medicine) as well as wetmarkets [0]
> Why not Brasil or India
Brazil has developmental indicators comparable to China and Mexico so I wouldn't put it in the same bucket as India.
And, Brazil and India actually aren't that dense - they are both much more small town driven due to the constraints of democracy.
A mega city like São Paulo only gets 30% of the deputies of the entire state of São Paulo, meaning smaller towns and rural areas get higher priority. And in India, a megacity like Bangalore only gets 13% of all MLAs in the state of Karnataka.
This made megacities much less attractive to migrate to compared to T2/3/4 cities in both countries.
> Why not Brasil or India
Brazil has developmental indicators comparable to China and Mexico so I wouldn't put it in the same bucket as India.
And, Brazil and India actually aren't that dense - they are both much more small town driven due to the constraints of democracy.
A mega city like São Paulo only gets 30% of the deputies of the entire state of São Paulo, meaning smaller towns and rural areas get higher priority. And in India, a megacity like Bangalore only gets 13% of all MLAs in the state of Karnataka.
This made megacities much less attractive to migrate to compared to T2/3/4 cities in both countries.
[0] - https://theconversation.com/why-so-many-epidemics-originate-...