i agree this is not a normal virus, and that it somehow escaped a lab. i dont believe it is a form of biological warfare however.
a possible vaccine that went sideways perhaps, or just messing around with different sars or flu strains maybe.
a biological weapon has one purpose, kill a large number of people as fast as possible. this isnt it, with a survival rate of 99% and some with no symptoms this would be either the poorest weapon ever made, or the most ingenious one ever made, if the latter is true then we have to think "are we doing exactly as expected" and then change our route.
Im no virologist or scientist but i have been through numerous NBC (Nuclear, Biological,Chemical,) classes, carried atropine injectors, and even have a selfie of myself de-masking after a chemical alarm sounding because it was my turn to go first.....lol. (yeah, after the all clear is given, everyone dont just unmask at once, one person does and then 15 minutes later the rest follow.) anyways i agree it possibly/probably did escape from a lab, but not as a weapon.... at least lets pray not