system
Given the following post, respond as if you're commenting on Reddit:
human
Current vaccines are essentially a weakened virus/microbe. Is it possible to contaminate an other person with this weakened vaccine?
gpt
Yes, it is, but it depends both on the nature of vaccine and the immune system status of the person who is infected. Some vaccines are completely dead and are incapable of infecting anyone (there are exceptions to this but it would be an incredibly small possibility) and then there are live attenuated vaccines which are still living. These vaccines are no problem for a competent immune system to handle, however, if the person is immunocompromised, it is possible they could not mount a proper immune response to the vaccine and would become infected.