Reply To: Studies on vaccines you might have missed.👨‍🔬💉🚫

@ubiquitin, the oral vaccine may not be used now in the USA, but we had to use it in Israel when there was an outbreak a few years ago. The inactivated vaccine can protect the individual from getting sick, but it does not block transmission, which means if there is an outbreak, vaccinated people can spread the virus without knowing it. The oral vaccine does create gut or mucosal immunity, meaning the vaccinated individual, after the initial period when they will shed the virus in their stool, will no longer transmit the virus to others. But the OPV (oral polio vaccine) does carry a danger of spreading vaccine strain polio, which can be more serious than wild strain polio (which was the case in an outbreak last year in Syria). So we all had to go and get the oral dose in addition to the IPV (inactivated polio vaccine). For those who don’t remember this outbreak, this article does a great job explaining the 2 types of vaccines, the upsides and downsides. http://science.sciencemag.org/content/342/6159/679.full
Similarly, the DTP shot was a weakened live vaccine and had to be changed out, like the oral polio, for the inactivated Tdap. This creates the same problem, symptoms in the vaccinated individual are absent, but they can still transmit the virus to infants and other susceptible individuals.