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Homeless Shelter Testing Surprise
- Jim O'Connell described universal testing at Boston's Pine Street Inn that found ~40% positive results among residents.
- Remarkably, nearly all positives were asymptomatic, baffling providers who expected a concentrated outbreak.
1918 Camp Brooks Sun Experiment
- In 1918 Camp Brooks moved influenza patients outdoors and cut the death rate by two-thirds.
- Staff observed patients' temperatures and comfort improved rapidly after exposure to fresh air and sunlight.
Sunlight Powers Our Internal Vitamin D
- Human skin synthesizes vitamin D when UVB from sunlight breaks a bond in a cholesterol precursor and the molecule is processed by liver and kidneys.
- Vitamin D then modulates immunity, affecting macrophage activity and inflammatory responses.