Table 1. Disease Burden (DALYs) in SSA Resulting from the NTDs.

Disease	Estimated Global Disease Burden in DALYs	Estimated % Disease Burden in SSA	Estimated SSA Disease Burden in DALYs	References
Hookworm	1.5–22.1 million	34%	0.5–7.5 million	[9 – 11]
Schistosomiasis	1.7–4.5 million	93%	1.6–4.2 million	[8, 10, 12]
Ascariasis	1.8–10.5 million	21%	0.4–2.2 million	[9 – 11]
Lymphatic filariasis	5.8 million	35%	2.0 million	[8]
Trichuriasis	1.8–6.4 million	27%	0.5–1.7 million	[9 –11]
Onchocerciasis	0.5 million	99%	0.5 million	[8]
Total NTDs	More than 49.8 million	15%–37%	5.5 million–16.1 million	[10]

DALY estimates for STH infections and schistosomiasis were obtained by adjusting a wide range of available global estimates according to the percentage of the total number of cases that occur in SSA, while for the other NTDs the disease burdens were quoted directly from WHO estimates. DALY is a WHO measure of overall disease burden expressed as the number of years lost due to ill-health, disability, or early death. Adapted from Hotez and Kamath, 2009 [7]. DALY, disability-adjusted life year; NTD, neglected tropical disease; SSA, sub-Saharan Africa; STH, soil-transmitted helminth; WHO, World Health Organization