We need vaccines to protect us from Infectious Diseases and to trigger the immune system to respond with production of antibodies made for that specific pathogen. See the related questions for more details of how this works.
to prevent disease or if you have the disease it will not be so serious
No you don't need to get vaccines to go to Barbados. http://kissbarbados.com
no, guinea pigs dont need vaccines and only need to be taken to the vet when ill or injured.
No, you do not need any vaccines when you travel to Ireland.
All equids (and tapirs) require the same vaccines but these will vary according to where they live.
It slows their spoilage.
no
We need to know who "he" is to answer your question.
No. We don't have mosquitos and we don't have unsafe water.
Because some vaccination are unimportant.
There is a number of medicines your pigeons need as well as vaccines.
You need to see a naturopath and heal your body from the ravages all your former vaccines have done to your body. Don't take my word for it, read some studies on short- and long-term vaccine effects NOT funded by the vaccine-makers.
Edible vaccines are vaccines produced in plants genetically modified through bioengineering.