Summary statistics of available studies by age grouping.

<p>Summary statistics of available studies by age grouping.</p

Classification of studies by region and World Bank Development Indicator in 2005.

<p>*Category has shifted rather than remaining stable within period from 1987–2013.</p><p><b>Source:</b> data.worldbank.org/data-catalog/world-development-indicators, accessed 12.11.2014.</p><p>Classification of studies by region and World Bank Development Indicator in 2005.</p

Flowchart of systematic review according to the PRISMA statement.

<p>Flowchart of systematic review according to the PRISMA statement.</p

Estimates of children with impetigo by regions of the world with available data^*.

<p>*Studies from Australia, New Zealand and North America excluded as all these studies were conducted in small, impoverished populations within these countries that may not reflect the overall burden of impetigo for the childhood population.</p><p>Estimates of children with impetigo by regions of the world with available data^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0136789#t003fn001" target="_blank">*</a>}.</p

Number of studies of impetigo prevalence by decade, country and region.

<p>* Two studies were published in 2010 and did not provide a year of data collection in the manuscript.</p><p>Number of studies of impetigo prevalence by decade, country and region.</p

Median prevalence of impetigo in childhood and overall, categorised by the World Development Index.

<p>Median prevalence of impetigo in childhood and overall, categorised by the World Development Index.</p

NIAMS skin funding in 2013 compared to skin disease disability scatter plot–GBD 2010 skin condition category NIAMS 2013 grant funding versus US GBD 2010 skin condition DALYs.

<p>NIAMS skin funding in 2013 compared to skin disease disability scatter plot–GBD 2010 skin condition category NIAMS 2013 grant funding versus US GBD 2010 skin condition DALYs.</p

Broad scientific themes of NIAMS 2013 skin grants in percentage.

<p>Broad scientific themes of NIAMS 2013 skin grants in percentage.</p

Conditions represented from the “other skin and subcutaneous diseases” Global Burden of Diseases category in the NIAMS 2013 skin-focused grants^a (arranged in order of decreasing funding).

a<p>See reference 11.</p>b<p>Only for fiscal year 2013; total funding for all NIAMS skin categories is $73,345,407.</p

NIAMS skin funding in 2013 and skin disease disability bar graph—Distribution of NIAMS funding in 2013 for skin-related grants (red) compared to percent of total US GBD 2010 DALYs for each category (blue).

<p>NIAMS skin funding in 2013 and skin disease disability bar graph—Distribution of NIAMS funding in 2013 for skin-related grants (red) compared to percent of total US GBD 2010 DALYs for each category (blue).</p