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.
Records for tax deductions taken. Length of time to keep, and why: Seven years. 1  The IRS has three years from your filing date to audit your return if it suspects good-faith errors.2  The three-year deadline also applies if you discover a mistake in your return and decide to file an amended return to claim a refund.redit card receipts and statements. Length of time to keep, and why: From 45 days to seven years. 1  Keep your original receipts until you get your monthly statement; shred the receipts if the two match up.