Researchers find a "positive association such that countries with higher percentage of population fully vaccinated have higher COVID-19 cases per 1 million people."
The NCAA released updates guidelines on Thursday that recognize natural immunity from previous COVID infection as equivalent to being "fully vaccinated.
The court holds a 6-3 conservative majority, and the line of questioning Friday suggested the conservative justices were skeptical of the federal government's power to impose broad Covid-19 vaccine regulations.
Challengers say the admin. exceeds its authority in requiring Covid-19 vaccines or testing at large employers, and mandating vaccines for health care workers.