To give you just a couple of examples how fast this has happened, in the mid-'70s, Brazil declared, "We have no Aedes aegypti," and currently they spend about a billion dollars now a year trying to get rid of it, trying to control it, just one species of mosquito.
For at give jer bare et par eksempler på hvor hurtigt dette er sket, i midten af 70'erne, bekendtgjorde Brasilien, "Vi har ikke nogen Aedes aegypti," og for øjeblikket bruger de omkring en milliard dollars om året for at prøve på at komme af med det, for at prøve at kontrollere det, bare en myggeart.