Whenever it shall be decided by the Board of
Health that any building or part thereof is unfit for human occupation
by reason of its harboring disease, or by reason of its being otherwise
likely to cause disease among the occupants, and notice of such decision
shall have been affixed conspicuously on the building, or any part
thereof, and personally served upon the owner, agent or lessee, if
the same can be found in the state, requiring all persons therein
to vacate from the building or part thereof for such reason as stated
in the notice aforesaid, the building or part thereof shall, within
10 days thereafter, be vacated or, in case of a special emergency,
within such shorter time as in the notice may be specified. Every
such notice shall be void if, within the time limited by the notice,
or before the premises is vacated, the cause for the giving of the
notice shall be cured so that the condition theretofore existing and
upon which the notice is based shall no longer exist.