Global overlap of six of the common NTDs, specifically guinea worm disease, lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminths, and trachoma, in 2011 The distribution of<unk> disproportionally affects about one billion of the world's poorest populations causing mortality, disability, and morbidity. Lack of funding, resources, and attention can result in treatable and preventable diseases causing death. Factors like political dynamics, poverty, and geographical conditions can make the delivery of NTD control programs difficult. Intersectional collaboration of poverty reduction policies and<unk>  creates cross-sector approaches to simultaneously address these issues. The six most common NTDs include soil-transmitted helminths (STHs)—specifically roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura) and hookworms (Necator americanus and Ancylostoma duodenale)—schistosomiasis, trachoma, and lymphatic filariasis (LF). These diseases affect one-sixth of the world's population with 90 percent of the disease burden occurring in sub-Saharan Africa. Information on the frequency of<unk>  is of low quality. It is currently difficult to summarize all of the information on this family of diseases. One effort to do so is the Global Burden of Disease framework. It aims to create a standardized method of measurement. The principle components of the approach involve 1) the measuring of premature mortality as well as disability, 2) the standardized usage of DALYs (disability-adjusted life years), and 3) wide spread inclusion of diseases and injury causes with the estimation of missing data. However, the DALY has been criticized as a "systematic undervaluation" of disease burden. King asserts that the DALY emphasizes the individual too much, while ignoring the effects of the ecology of the disease. In order for the measure to become more valid, it may have to take the context of poverty more into account. King also emphasizes that DALYs may not capture the non-linear effects of poverty on cost-utility analysis of disease control. The Socio-Demographic Index (SDI) and Healthy Life Expectancy (HALE) are other summary measures that can be used to take into account other factors. HALE is a metric that weights years lived and health loss before death to provides a summary of population health. SDI is a measurement that includes lag-distributed income per capita, average education, and fertility rate. Socioeconomic factors greatly influence the distribution of<unk> , and not addressing these factors in models and measurements can lead to ineffective public health policy.
Neglected tropical diseases
Vaccine-preventable diseases
Waterborne diseases
Climate change and infectious diseases
Native American disease and epidemics
Infectious diseases 
Tropical disease
Drug pollution