So this “expert” is saying this one virus is going to be totally differnt then every single virus in history? Viruses do not get “more virulent”.
They just cannot stop lying
actually Marek’s did, in response to mass use of a leaky vaccine.
not sure if you know that and are just ignoring it or aren’t familiar with the history of the marek’s vaccine/disease. it is worth reading about if being informed is a motive.