The Global Burden of Disease (GBD) study, a collaborative endeavour of the World
Health Organization (WHO), the World Bank and the Harvard School of Public Health,
drew the attention of the international health community to the burden of neurological
disorders and many other chronic conditions. T...his study found that the burden of neurological
disorders was seriously underestimated by traditional epidemiological and health
statistical methods that take into account only mortality rates but not disability rates. The
GBD study showed that over the years the global health impact of neurological disorders
had been underestimated.
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This report summarizes the World Health Organization’s (WHO) global work on water, sanitation and hygiene (WASH) during 2022. It describes how the Organization continued to deliver its essential WASH programming as elaborated in its 2018–2025 strategy.