Section 1521. County mosquito control commission; terms of office; oath

1.
  The  terms  of  office  of  all  members of each county mosquito control
  commission, appointed after the expiration  of  the  first  appointment,
  shall be four years.
    2.  The  members  first  appointed  to  the  county  mosquito  control
  commission by the county board of supervisors in any district under  the
  provisions  of  this article shall hold office respectively for the term
  of one, two, three and four years.
    3. The term of the member appointed by the commissioner shall be  four
  years.
    4. Vacancies in such commission occurring by resignation or otherwise,
  shall  be  filled  by  the  county  board  of  supervisors in the manner
  provided in section one thousand five hundred twenty  of  this  chapter,
  except  any  vacancy  caused  by  resignation or otherwise of the member
  appointed by the commissioner shall be filled by the commissioner in the
  manner provided in section one thousand  five  hundred  twenty  of  this
  chapter,  and  the  persons so appointed to fill such vacancies shall be
  appointed for the unexpired term only.
    5. Before entering upon the  duties  of  his  office  each  commission
  member  shall take and subscribe an oath or affirmation before the clerk
  of the county in which is situated the district in and for which  he  is
  appointed  to  perform  faithfully  and  impartially  the  duties of his
  office, which oath or affirmation shall be filed with such clerk.