Aedes albopictus
Overview
Aedes albopictus (the Asian tiger mosquito) is the secondary vector for dengue virus transmission. Unlike the primary vector Aedes aegypti, which is highly domesticated and closely associated with human habitation in tropical urban centres, Ae. albopictus is an invasive, more generalised species with a broader geographic range that includes temperate regions. Its establishment in Europe, North America, and other non-tropical areas has enabled sporadic local dengue transmission outside the historically endemic zones.
Key Points from Literature
- Ae. albopictus is identified as a secondary dengue vector that, alongside Ae. aegypti, enables sporadic local transmission in the United States and Europe — particularly relevant given the importation of DENVs via travel to endemic areas (see Guzman2016 - Dengue Infection).
- While Ae. aegypti has been the overwhelmingly dominant vector driving the global dengue pandemic, Ae. albopictus is an increasing public health concern in non-endemic regions as climate change and global trade expand its range.
- Ae. albopictus is less domesticated than Ae. aegypti — it utilises a wider variety of natural and artificial breeding sites — which makes larval source reduction strategies somewhat less effective against it than against the highly anthropophilic Ae. aegypti.
Contradictions & Debates
- The epidemiological contribution of Ae. albopictus vs. Ae. aegypti in areas where both are present is debated; in most tropical endemic settings Ae. aegypti is dominant, but in some Pacific islands and parts of Europe, Ae. albopictus drives transmission.