It was thanks to easy international travel that in recent years the dengue, chikungunya, and Zika viruses were all able to hitch a ride from east to west, causing massive outbreaks in the Americas and Caribbean.
Foi graças à facilidade de se viajar para destinos internacionais, que os vírus dengue, chikungunya e zika conseguiram viajar do Oriente para o Ocidente, provocando surtos enormes no continente americano e Caraíbas.