Nongermetic Covid vaccines cause the virus to evolve The nongermetic vaccine is unable to stop circulation of virus, but it does reduce severe scenarios, some researchers believe. But back in 2015, molecular biologists uncovered a disturbing phenomenon. Some low-quality vaccines, including most veterinary flu vaccines, not only fail to help the body cope with pathogenic viruses, but also contribute to the evolution of their more dangerous forms, according to an article published in the journal PLOS Biology (https://bit.ly/3ldlFFu). The most contagious strains of avian influenza that mow down entire poultry farms around the world today can kill an unvaccinated bird in as little as three days. In the United States and Europe, infected birds are destroyed, and the virus cannot continue to evolve. Southeast Asians are instead vaccinating birds with low-quality vaccines, which could help evolve the flu into more deadly forms, said Andrew Reed of Pennsylvania State University in Philadelphia. Reed and his colleagues found the first confirmation of the highly controversial and popular among opponents of vaccination idea that such drugs can accelerate the evolution of disease-causing viruses in an attempt to uncover the roots of the mysterious epidemic, the so-called Marek's disease, on chicken farms in the United States. This disease, caused by the herpes virus, was a fairly rare guest on poultry farms until recently, and its appearance did not lead to massive deaths of birds. Today it is even less common due to vaccination, which began in the 70s of the last century, but the virus has become much more dangerous and infection of unvaccinated birds usually leads to their death 10 days after the onset of infection. The main feature of the vaccine that farmers use to protect birds from the virus is that the immunity it produces is not complete; it does not prevent the spread of the virus from a protected birds to other chickens. Such conditions, as scientists said, contribute to the evolution of extremely dangerous and pathogenic strains of the virus that could not survive in an unprotected population of birds, as they would kill them too quickly to effectively spread across the planet. Reed's group tested this hypothesis by comparing what happened to the most infectious strains of Marek's virus in vaccinated and unvaccinated birds. As shown by these observations, the vaccinated birds released into the environment a large number of viral particles, which were able to enter the body of chickens from the control group living in cages nearby, and infect and kill them. When scientists infected unvaccinated birds with this virus, they died too quickly for their bodies to begin shedding Marek's virus into the environment, thereby preventing further spread of the infection and the development of the virus. This, according to scientists, shows in practice that poor-quality vaccination not only does not restrain the spread of infection, but also allows it to become more dangerous and infectious than is possible under normal conditions. Thus, mass vaccination with nongermetic vaccines against Covid-19 contributes to the spread of more and more new strains of Covid-19.