Read et al. warned us 2015 using chickens (Marek's disease) that using an imperfect 'leaky' vaccine can enhance transmission of highly virulent pathogens; sub-optimal non-sterilizing non-neutralizing
by Paul Alexander
COVID gene injections (mRNA VAX, DID NOT STOP TRANSMISSION) via vaccinating INTO teeth of ongoing pandemic with massive infectious pressure WILL drive selective pressure for more infectious variants
‘Could some vaccines drive the evolution of more virulent pathogens? Conventional wisdom is that natural selection will remove highly lethal pathogens if host death greatly reduces transmission.
Vaccines that keep hosts alive but still allow transmission could thus allow very virulent strains to circulate in a population.’
Researchers showed ‘experimentally that immunization of chickens against Marek's disease virus enhances the fitness of more virulent strains, making it possible for hyperpathogenic strains to transmit. Immunity elicited by direct vaccination or by maternal vaccination prolongs host survival but does not prevent infection, viral replication or transmission, thus extending the infectious periods of strains otherwise too lethal to persist.’ The data shows ‘that anti-disease vaccines that do not prevent transmission can create conditions that promote the emergence of pathogen strains that cause more severe disease in unvaccinated hosts.’