In 2014 the number of Dengue virus strains has significantly increased throughout the Americas

2014

1 Strain

2 Strains

3 Strains

4 Strains

Not specified

No cases

No data

1990

1990

2014

1 Strain

2 Strains

3 Strains

4 Strains

Not specified

No cases

No data

Guardian graphic. Source: World Health Organization, Pan American Health Organization, updated Jan 2015