NEW YORK (AP) — Infant mortality in the U. S. dropped to a new all-time low in 2025, according to preliminary government data. There were slightly fewer than 5. 4 infant deaths per 1,000 live births in 2025, according to the Centers for Disease Control and Prevention. While that appears to be a small decline from about 5. 5 in 2024 and 5. 6 in the two years preceding, researchers say it is statistically meaningful and translates to hundreds of fewer infant deaths per year. It's difficult to...