When the commissioner has reasonable cause to suspect possible disease transmission by an employee of the facility, the commissioner may obtain information about any recent illness of the employee or make other investigations as may be indicated. The commissioner may require any of the following:
(1) The immediate exclusion of the employee from employment in the hotel or public pool;
(2) The immediate closing of the facility until, in the commissioner's opinion, no further danger of disease outbreak exists;
(3) Restricting the employee's service to some area of the facility where there would be little likelihood of transmitting disease; or
(4) Adequate medical and laboratory examinations of the employee and of other employees.