I doubt that COVID19 is a bio-weapon. It may have been a lab virus that the Chinese were using to test vaccines. And it got out. COVID19 is not a military weapon. It may actually help the country affected. It mostly kills older people and sickly. And it is so fast moving that it could fly through a country in a couple of months leaving a stronger population behind. No, COVID19 is not military grade. But it would be a great test virus.
A mil-grade weapon that kills and disables is a better weapon that one that just kills - each effected person draws resources away from the country’s efforts and economy - mustard and choline gas in WWI, ammo deigned to maim like the .222 and hollow points as well as air burst arty etc are such weapons.
There are also many anomalies in the construction of this virus that the chances of a natural occurrence are well over one million to one.
Despite China’ admission that it is a bio-weapon a day or so ago, you are free to believe whatever makes you comfortable.
It kills health people from ages 10-100 just so you know, its not an agist virus.
if you absolutely need documentation, don’t whine to me about it - I suggest you read from start to finish all the corona virus threads where you will find ample.