Figure 4. Employing a hypothetical dengue climate limit estimated from epidemics in Australia that stopped on the arrival of winter where the outside temperature fell to a wet bulb isotherm (T_W) of 14–15°C [12], we mapped a 14.2°C T_W isotherm onto Australia using three temporal increments.

Panel A represents the 14.2°C annual mean T_W for Australia [12]. Panel B represents the 14.2°C T_W for Australia's warmest quarter (December–February), representing summer transmission. Panel C represents the same isotherm for Australia's coolest quarter (June–August), representing potential year-round transmission.