Evidence based decision making in health requires the availability of sound data, but good quality information on the occurrence of infectious diseases is unavailable from most of South Asia, especially on premature mortality and loss of healthy life years in adult populations. Thus calculations of disease burden using techniques such as disability adjusted life years (DALYs) are fraught with difficulty; deaths and disability caused by infections such as meningitis, encephalitis, chronic hepatitis, leishmaniasis, congenital infections, rabies, and post-streptococcal rheumatic heart disease in South Asian populations remain hidden and unmeasured.
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