Any Borough board, council, or commission position shall be
deemed vacant whenever the member, without being excused by a majority
of the authorized members of such body, fails to attend and participate
at meetings of such body for a period of six consecutive weeks, or
for three consecutive regular meetings, whichever shall be of longer
duration, at the conclusion of such period, provided that such body
shall notify the Borough Council in writing of such determination;
provided, further, that such board, council, commission, authority
or other agency may refuse to excuse only with respect to those failures
to attend and participate which are not due to legitimate illness.