What Are The Advantages And Disadvantages Of H1N1 Swine Flu Vaccination?

Dear Doctor,Swine flu has taken over India by storm.The office administration of my son 25 years of age intend to get all workers in the office vaccinated with HINI swine flu vaccination. We are confused as to whether he should get himself vaccinated or not.What are the advantages/disadvantages of getting vaccinated.My email is: YYYY@YYYY