The geographical distribution of
Aedes albopictus
in Brazil was updated according to the data recorded across the country over the last eight years. Countrywide house indexes (HI) for
Ae. albopictus in urban and suburban areas were described for the first time using a sample of Brazilian municipalities. This mosquito is currently present in at least 59% of the Brazilian municipalities and in 24 of the 27 federal units (i.e., 26 states and the Federal District). In 34 Brazilian municipalities, the HI values for
Aedes albopictus were higher than those recorded for
Aedes aegypti
Ae. aegypti, reaching figures as high as HI = 7.72 in the Southeast Region. Remarks regarding the current range of this mosquito species in the Americas are also presented. Nineteen American countries are currently infested and few mainland American countries have not confirmed the occurrence of
Aedes albopictus
. The large distribution and high frequency of
Ae. albopictus in the Americas may become a critical factor in the spread of arboviruses like chikungunya in the new world.
