> If this were a virus created using gain of function research we would call it a biological weapon. Except it's the literal opposite of gain of function: it's

> If this were a virus created using gain of function research we would call it a biological weapon. Except it's the literal opposite of gain of function: it's the subtraction of function from a pathogen which already exists in the environment and already infects people on a regular basis in the environment, turning it from a deadly killer into something that dies quickly and without reproducing when it meets the human immune system.