Introduction. The risk for Mycobacterium tuberculosis transmission among healthcare workers (HCWs) has been well known for many years. The kind of job and the incidence of tuberculosis (TB) in the community conditions the risk of TB infection among HCWs.ntroduction. The risk for Mycobacterium tuberculosis transmission among healthcare workers (HCWs) has been well known for many years. The kind of job and the incidence of tuberculosis (TB) in the community conditions the risk of TB infection among HCWs.
Keep for 1 month: utility bills, deposit and withdrawal records. If youâre self-employed, you may need your utility, cable and cell phone bills for tax purposes. Otherwise, you can dispose of them as soon as you verify your payment was processed.
1 How long to keep records: Keep the records for at least three months. 2  Review that all the purchases are correctly entered in your bank and credit card statements. 3  Review your monthly bills.4  If there is a discrepancy, then keep the document until you resolve the problem. How long to keep records: Keep the records for at least three months. 2  Review that all the purchases are correctly entered in your bank and credit card statements. 3  Review your monthly bills.