I lean more towards it was the USA that released covid. From what we've already seen with Fauci getting caught with his hand in the cookie jar funding gain of function research.. I think it makes more sense that it was the USA, especially when considering how China has run with these zero covid policies. I personally knew people that caught covid from one person at a party who had been travelling, and everyone at the party caught it and got sick. Two people that attended this party got REALLY sick. Guess which ethnicity they were? Yup, Asian. At the time, one of my white friends casually threw out a joke and said 'haha it looks like covid really hits asians hey?' But it was that comment that got me thinking that whatever this was, was mutated and designed to specifically target certain genes much more aggressive than others. It would explain why China has gone to such great measures to contain it.