Not trolling, but in certain cities the amount of human waste in the streets suggests the answer could be far from zero. These unsanitary conditions seem to me to be an additional risk factor that probably wasn't taken into account when the risk factors for 'wealthy countries' were being calculated.
IDK whether this is significant to the original question (de-worm or not) because I'm not qualified to speculate, but I think it certainly suggests that at least for some cities, the evidence should be re-evaluated with realistic sanitation conditions in mind.
