Figure 4.

Trends in WHO/AFRO sub-regional epidemiology and public health articles output indexed by SCI (1991–2010). Note: The apparent contrast in North African showing little rise in published output for 2 decades need to take account of the fact that our bibliometric analysis covers only WHO/AFRO region, which include Algeria as the only North Africa country. Four other North African countries (Morocco, Libya, Egypt, Tunisia) are included the WHO’s Eastern Mediterranean Regional Office (WHO/EMRO). TP, total published articles