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WHO Hospital Infection Control Guidance for Severe Acute Respiratory Syndrome (SARS)

 

Hospital Infection Control Guidance for Severe Acute Respiratory Syndrome (SARS)

Revised 24 April 2003

 

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Outpatient/triage setting
bulletThose presenting to health care facilities who require assessment for SARS should be rapidly diverted by triage nurses to a separate area to minimize transmission to others
bulletThose patients should be given a face mask to wear, preferably one that provides filtration of their expired air.
bulletStaff involved in the triage process should wear a face mask (see below) and eye protection and wash hands before and after contact with any patient, after activities likely to cause contamination and after removing gloves
bulletWherever possible, patients under investigation for SARS should be separated from the probable cases.
bulletSoiled gloves, stethoscopes and other equipment have the potential to spread infection.
bulletDisinfectants such as fresh bleach solutions, should be widely available at appropriate concentrations.

Inpatient setting
Care for probable SARS cases
(see Case Definitions for Surveillance of Severe Acute Respiratory Syndrome (SARS)
bulletProbable SARS cases should be isolated and accommodated as follows in descending order of preference:
  1. negative pressure rooms with the door closed
  2. single rooms with their own bathroom facilities
  3. cohort placement in an area with an independent air supply, exhaust system and bathroom facilities
bulletTurning off air conditioning and opening windows for good ventilation is recommended if an independent air supply is unfeasible. Please ensure that if windows are opened they are away from public places
bulletWHO advises strict adherence to the barrier nursing of patients with SARS, using precautions for airborne, droplet and contact transmission
bulletAll staff, including ancilliary staff should be trained in the infection control measures required for the care of such a patient
bulletA member of staff must be identified who will have the responsibility of observing the practice of others and provide feedback on infection control
bulletDisposable equipment should be used wherever possible in the treatment and care of patients with SARS and disposed of appropriately. If devices are to be reused, they should be sterilized in accordance with manufacturers’ instructions. Surfaces should be cleaned with broad spectrum disinfectants of proven antiviral activity
bulletMovement of patients outside of the isolation unit should be avoided. If moved the patients should wear a face mask
bulletVisitors, if allowed by the health care facility should be kept to a minimum. They should be issued with personal protective equipment (PPE) and supervised
bulletAll non-essential staff (including students) should not be allowed on the unit/ward
bulletHandwashing is crucial: therefore access to clean water is essential
Hands should be washed before and after contact with any patient, after activities likely to cause contamination and after removing gloves
bulletAlcohol-based skin disinfectants could be used if there is no obvious organic material contamination
bulletParticular attention should be paid to interventions such as the use of nebulisers, chest physiotherapy, bronchoscopy or gastroscopy; any other intervention which may disrupt the respiratory tract or place the healthcare worker in close proximity to the patient and potentially infected secretions.
bulletPPE should be worn by all staff and visitors accessing the isolation unit
bulletThe PPE worn in this situation should include:
  A face mask providing appropriate respiratory protection (see below)   
  Single pair of gloves
  Eye protection
  Disposable gown
  Apron
  Footwear that can be decontaminated
bulletAll sharps should be dealt with promptly and safely
bulletLinen from the patients should be prepared on site for the laundry staff. Appropriate PPE should be worn in this preparation and the linen should be put into biohazard bags
bulletThe room should be cleaned by staff wearing PPE using a broad spectrum disinfectant of proven antiviral activity
bulletSpecific advice concerning air conditioning units will be available soon
bulletRespiratory protection. This should where feasible be provided at *P100/FFP3, or P99/FFP2 filter level (99.97% and 99% efficiency respectively). *N95 filters (95% filter efficiency) also provide high levels of protection and could be worn where no acceptable higher protection alternatives are available for example staff working in triage areas, prior to isolation. Ideally, the masks used should be fit tested using an appropriate "fit test kit" in accordance with the manufacturing instructions. Disposable masks should not be reused.

*N/R/P 95/99/100 or FFP 2/3 or an equivalent national manufacturing standard (NIOSH (N,R,P 95,99,100) or European CE EN149:2001(FFP 2,3) and EN143:2000 (P2) or comparable national/regional standards applicable to the country of manufacture.

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