Which Vaccinations and Why?

CANINE
     I.  Required and/or Suggested Immunizations and Descrioption of the Disease:
                    A.  Distemper
                    B.  Hepatitis
                    C.  Leptospirosis *
                    D.  Para-influenza
                    E.  Parvo
                    F.  Corona*
                    G.  Bordetella
     II.  Recommended vaccination schedules: