We got sick in India/Nepal and recovered fast, before the name covid was coined. We were visiting an ashram, everyone got sick there and thought it was a local virus that everyone gets when one comes to Kathmandu city (crazy pollution and crowds, you get sick almost every time you go there). Everyone at the ashram was taking giloy tea daily for another disease that was rampant at that time, and everyone was recovering within a week, no oxygen tanks, no casualties. It was bad but not deadly. Don't know if the plant helped, but ayurveda regards it as one of its jewels. Now we're growing some giloy plants, just in case :-/