> It does a bit toward preventing spreading it if you already have it, but if you already have it, the schools send you home anyway Most of the schools that do

> It does a bit toward preventing spreading it if you already have it, but if you already have it, the schools send you home anyway Most of the schools that do testing due so weekly. With delta someone can be contagious up to 36 hours after infection. That means someone who gets tested on Friday morning, goes to a poorly ventilated party with a COVID-19+ that evening and returns to school on Monday could spread the disease for a week.