Fig. 1
From: Co-authorship network analysis in health research: method and potential use
Global network of countries conducting research on vaccines against Chikungunya. Each node represents a country and two countries were considered connected if its organizations shared the authorship of a paper. The size of the nodes indicates their degree centrality and the thickness of links indicates the intensity of collaboration between two nodes. The nodes are color-coded by continent – European continent (blue), North America (pink), Asia (green), Africa (yellow), South America (grey) or Australia/Oceania (orange)