Table 3. Proportion of original research articles in each research area by year.

Year	Epi-demiology	Fundamental research	Diagnostics	Treatment	Vaccines	Operational and PH research	Other	Number of papers
2007	32.7	26.9	7.7	7.7	7.7	13.5	3.8	52
2008	23.3	25.0	15.0	3.3	10.0	11.7	11.7	60
2009	26.4	45.8	9.7	1.4	2.8	9.7	4.2	72
2010	22.9	42.9	7.1	5.7	5.7	15.7	0.0	69
2011	26.5	38.6	12.0	2.4	6.0	13.3	1.2	83
2012	32.7	29.7	7.9	10.9	5.0	13.9	0.0	101
2013	24.5	34.9	9.4	5.7	6.6	18.9	0.0	106
2014	35.2	31.5	15.7	6.5	1.9	9.3	0.0	108
2015	29.6	35.2	7.4	10.2	3.7	13.0	0.9	103
2016	36.3	29.0	8.9	8.1	4.8	12.1	0.8	124
Overall	29.6	33.8	10.1	6.6	5.1	13.1	1.7	878

Research areas were identified from the WHO International roadmap for tuberculosis research [17].