Fig. 4

Thematic map of HIV prevention and/or treatment articles authored by low- and middle-income scientists. The map shows 5982 unique terms obtained from titles and abstracts of publications on HIV prevention and/or treatment involving at least one LMIC-based author. The closer two terms are positioned to each other, the stronger their relation. Each term is represented by a circle, where its diameter and label size is proportional to the number of publications that have the corresponding term in their title or abstract. a Colors indicate clusters of terms that have co-occurred more frequently in the dataset. b and c Colors indicate the occurrence of a term in publications co-authored by HIC and LMIC-based scientists (b) or in publications involving LMIC authors only (c) relative to the whole dataset. Blue represents a low occurrence, green an average occurrence, and red a high occurrence (for the corresponding VOSviewer file see Additional File 2)