US mortality statistics from CDC NCHS. dataset=leading-causes (default): annual deaths + age-adjusted death rate per 100k by state and top-10 cause of death, 1999-2017 — filter by state (full name, e.g. "California", or "United States"), year, cause (e.g. "Heart disease", "Cancer", "Suicide"). dataset=weekly-counts: provisional weekly death counts by jurisdiction with per-cause columns (all-cause, natural, COVID-19, heart disease, cancer, etc.), 2020-2023 — filter by state and mmwrYear. Rows returned raw from CDC with documented column names. Public-domain federal data.

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