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Maryland Department of Health

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Situations

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West Nile virus cases rise in Europe and US

56 clusters · 412 sources · last updated

Latest: West Nile virus claims first 2026 death in California as Arizona reports surge in cases

Mosquito surveillance in July confirmed a rapid expansion of West Nile virus across Europe and North America. In the Balkans, Macedonia reported two laboratory‑confirmed cases on July 4 and later confirmed ten infections

[ACTIVE] [HEALTH] [US]

US youth substance use decline

2 clusters · 6 sources · last updated

Latest: US Youth Substance Use and Mental Health Improves, Survey Shows

A SAMHSA report covering 2021‑2025 shows notable reductions among U.S. adolescents and young adults in past‑month use of tobacco, alcohol, marijuana, binge‑drinking, vaping and other illicit substances, as well as declin

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