Where it is certified to the Chief Executive Officer by the Health Officer or a doctor in the employment of the Board that there is apprehension of the outbreak or spreading of any infectious or contagious or communicable disease in the cantonment because of use of contaminated needles, syringes or any other such equipment by a medical practitioner or by any paramedical worker, the Chief Executive Officer may, by notice in writing, require the medical practitioner or the paramedical worker, within such time as may be specified in the notice, to furnish him with a full and complete list of the names and addresses of all his customers or patients within the cantonment, or to give him such information as will enable him to trace the persons whom the medical practitioner or the paramedical worker has attended to or treated in the six weeks preceding the date of issuing the notice.