How can we be so certain that diseases-carrying mosquitoes are bound to certain places and won’t cause a mass epidemic? How about people that come and go from countries stricken by malaria, dengue fever, etc.? Don’t they risk becoming infected and bringing the disease overseas worth them?
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Mosquitoes have a lifespan of about three weeks and can only fly at top speeds of one to one and a half miles per hour, so that naturally limits the distance they’re realistically capable of traveling.
For people traveling, most nations have vaccination requirements for entering and leaving the country — particularly in regions that are prone to such diseases.
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