SARS vaccine makes 2019 n-CoV more deadly?
Not sure the % of BS to real info here, but a theory that folks who took the SARS vaccine may be more susceptible to nCov:
I am not a skeptical person, However, there is nothing that makes me think there is any association of the two. and one or the other affects susceptibility. It just goes against any logic that I can apply to the biology i know, even taken into account that I know an extreme amount, but still much less than what we could know about biology.
S Protein-based Coronavirus Vaccine has indeed given safety concerns.
Inactivated Coronavirus Vaccine has issues. However, the development of inactivated vaccines requires the propagation of high titers of infectious virus, which in the case of SARS-CoV requires biosafety level 3-enhanced precautions and is a safety concern for production. Additionally, incomplete inactivation of the vaccine virus presents a potential public health threat. Production workers are at risk for infection during handling of concentrated live SARS-CoV, incomplete virus inactivation may cause SARS outbreaks among the vaccinated populations, and some viral proteins may induce harmful immune or inflammatory responses, even causing SARS-like diseases
Live Attenuated Coronavirus Vaccine While live attenuated vaccines targeting respiratory viruses, including influenza viruses and adenoviruses, have been approved for use in humans, the observation that infectious virus is shed in the feces of SARS-CoV-infected individuals raises concerns that a live attenuated SARS-CoV vaccine strain may also be shed in feces, with potential to spread to unvaccinated individuals. Another concern is the risk of recombination of a live attenuated vaccine virus with wild-type CoV; however, there may be ways to engineer the genome of the vaccine virus to minimize this risk.