Tick Bites and Lyme Disease: What the Evidence Shows
How long a tick must be attached, what works after a bite, why US case counts jumped, and what trials of longer antibiotics and a new vaccine found.
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Measles: What the Evidence Shows About the Risk
US measles cases went from 285 in 2024 to 3,471 by September 2026. How contagious measles is, how well the vaccine works, what immune amnesia is, and where the famous numbers are firmer or softer than they sound.
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The Six-Foot Rule Was Wrong, and Handwashing Was Never the Main Defence
In 2024 the WHO dropped the droplet-versus-airborne distinction that underpinned decades of advice. Exhaled particles behave like smoke, not falling cannonballs — which moves ventilation to the top of the list and surface cleaning near the bottom.
