Transmission Potential for Dengue Fever Rises Globally

Percent change in the basic reproduction number (R0) of dengue by Aedes aegypti mosquitos in each World Health Organization Region. Click below to compare the different regions:

Africa Americas Eastern Mediterranean Europe South-East Asia Western Pacific

The scatterplot chart shows the increase in dengue fever transmissibility by Aedes aegypti mosquitos from 1951 to 2022. In each of the World Health Organization (WHO) regions, there were increases in the pathogen's contagiousness.

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The rate change is compared to the 1951-60 average. R0 is an indication of a pathogen's contagiousness and transmissibility.

Source: Lancet Coundown, 2023Get the data