There is some contention that A. aegypti is displacing A. albopictus in the Asian region. The increase in dengue fever since the 1950s may be correlated with this change in vectors. This will be discussed later. Although A. albopictus is of lesser importance in the transmission of dengue, studies indicate that it is more susceptible to infection than A. aegypti . A particular striking dissimilarity with A. aegypti is the fact that A. albopictus can maintain the disease via transovarial transmission.
Males can horizontally transmit dengue to females during mating.
Although still unconfirmed, some researchers believe that Malaysian monkeys may act as sylvatic hosts. Some hypotheses suggest that the disease arose from this interaction. A variety of methods have been used in an attempt to control Aedes mosquitoes. Cuba, in 1901, attempted the first control using oil and sulfur fumigation. DDT application characterized the post-war era.