disadvantage of vaccine?

Answer 1

Overall, vaccines are pretty useful for preventing serious diseases. Injections given in the muscle can cause soreness for a few days, but it's generally mild. A few vaccines (yellow fever for example, which is given to travelers) can cause a low grade fever and make a person feel a little off for a day or so, but it's very mild. A concern with a couple other preparations (live attenuated polio for example) is that the strain used in the vaccine can revert to a disease-causing strain, but this is pretty rare and can be avoided with a killed strain vaccine. Another serious concern for the pro-life community is that there are many vaccines that have been developed with fetal cell lines. The most important caution, however, is that most vaccines should not be given to anyone with impaired immunity, such as advanced HIV infection, immune suppression after an organ transplant, etc.. Hope this is what you were looking for!

Answer 2

Though the medical community and others strongly believe in vaccines, there are those who have either lost a child to bad reaction to a vaccination and those who believe that certain vaccines cause directly or indirectly some form of autism. There is also a small group of people who believe that vaccinations can cause immune system failures. In light of the connection of some vaccines to carcinomas in cats and to a lesser degree in dogs, maybe they are not too far off the track.

Answer 3

Serum sickness.
It is a late complication but is incurable.It may paralyse both lower limbs.