There is no similarity between penicillin and the flu vaccine. See the related questions below for more information on who should not get vaccinated for the Swine Flu.
Anaphylactic shock.
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A severe allergic reaction could result in anaphylactic shock and death.
no
Anaphylaxis is a life-threatening allergic reaction. The related adjective is "anaphylactic," but this isn't used to describe the person (i.e. you wouldn't write "She's anaphylactic for tree nuts.") Instead, it's used to describe the reaction ("She had an anaphylactic reaction to tree nuts.")
yes
Type your answer here... Yes you can get hives if you are allergic to penicillin. Usually, hives are what happens the first time a person displays an allergic reaction to penicillin. The next time a person takes penicillin, the reaction escalates past hives to a much more serious reaction involving difficulty breathing (airways restrict). A penicillin allergic reaction can cause death. People who are allergic to penicillin should wear a medical bracelet or necklace that clearly identifies their allergy.
There is a chance that you might if you are really allergic.
If it is a non-anaphylactic reaction then how do you know it is a result from a vaccination? I would take my dog to my Veterinarian immediately and let him/her figure it out. That would be safest for your dog.
An extreme allergic reaction is called anaphylactic shock, and it is fatal if not treated very promptly with epinephrine.
Flouixciliin
Yes, there is no penicillin in hydrocortisone tablets (Cortef). Allergic reaction to cortisone is very rare.