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Volume 26 - September 2005

Contents

Page 9 of 10

Concise Communications

Original Articles

  • Dispersal of Staphylococcus aureus Into the Air Associated With a Rhinovirus Infection

  • Stefano Bassetti, Werner E. Bischoff, Mark Walter, Barbara A. Bassetti-Wyss, Lori Mason, Beth A. Reboussin, Ralph B. D'Agostino, Jr, Jack M. Gwaltney, Jr, Michael A. Pfaller, Robert J. Sherertz
  • Published online by Cambridge University Press:
    21 June 2016, pp. 196-203
  • Objective:

    To determine whether healthy adult nasal carriers of Staphylococcus aureus can disperse S. aureus into the air after rhinovirus infection.

    Design:

    We investigated the “cloud” phenomenon among adult nasal carriers of S. aureus experimentally infected with a rhinovirus. Eleven volunteers were studied for 16 days in an airtight chamber wearing street clothes, sterile garb, or sterile garb plus surgical mask; rhinovirus inoculation occurred on day 2. Daily quantitative air, nasal, and skin cultures for S. aureus; cold symptom assessment; and nasal rhinovirus cultures were performed.

    Setting:

    Wake Forest University School of Medicine, Winston-Salem, North Carolina.

    Participants:

    Wake Forest University undergraduate or graduate students who had persistent nasal carriage of S. aureus for 4 or 8 weeks.

    Results:

    After rhinovirus inoculation, dispersal of S. aureus into the air increased 2-fold with peak increases up to 34-fold. Independent predictors of S. aureus dispersal included the time period after rhinovirus infection and wearing street clothes (P < .05). Wearing barrier garb but not a mask decreased dispersal of S. aureus into the air (P < .05).

    Conclusion:

    Virus-induced dispersal of S. aureus into the air may have an important role in the transmission of S. aureus and other bacteria.

  • Efficiency of Hand Drying for Removing Bacteria From Washed Hands Comparison of Paper Towel Drying With Warm Air Drying

  • Yukiko Yamamoto, Kazuhiro Ugai, Yasuko Takahashi
  • Published online by Cambridge University Press:
    21 June 2016, pp. 316-320
  • Objective:

    To evaluate warm air and paper towel drying for removing bacteria from washed hands.

    Methods:

    After hands were washed with non-antibacterial soap, they were dried using warm air with and without ultraviolet light, while being rubbed or held stationary, or paper towels. Each method was performed as a randomized trial using 30 hands.

    Results:

    Log colony-forming units (CFU) on palms and fingers increased significantly when hands were dried with warm air while being rubbed for 15 seconds (P < .001), and many bacteria remained at 30 seconds without ultraviolet light (P < .001). Holding hands stationary while drying significantly decreased log CFU on palms, fingers, and fingertips (P < .01 or < .001). Few CFU were detected on palms and fingers dried with ultraviolet light. Although log CFU of palms and fingers did not decrease after drying with three sheets of paper towel, those of fingertips decreased significantly (P < .001). For palms and fingers, log reductions were greater with warm air drying while holding hands stationary, paper towels, and warm air drying while rubbing hands. For fingertips, the log reduction was often greater with paper towels than with warm air.

    Conclusions:

    Holding hands stationary and not rubbing them was desirable for removing bacteria. Ultraviolet light reinforced the removal of bacteria during warm air drying. Paper towels were useful for removing bacteria from fingertips but not palms and fingers.

Back matter

  • ICE volume 26 issue 5 Cover and back matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. b1-b2
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Front matter

  • ICE volume 26 issue 6 Cover and Front matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. f1-f7
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Original Articles

  • Prevalence of Nosocomial Infection and Antibiotic Use at a University Medical Center in Malaysia

  • Andrew J. Hughes, Norliza Ariffin, Tan Lien Huat, Habibah Abdul Molok, Salbiah Hashim, Juliana Sarijo, Nor Harlida Abd Latif, Yasmin Abu Hanifah, Adeeba Kamarulzaman
  • Published online by Cambridge University Press:
    21 June 2016, pp. 100-104
  • Background and Objective:

    Most reports of nosocomial infection (NI) prevalence have come from developed countries with established infection control programs. In developing countries, infection control is often not as well established due to lack of staff and resources. We exMnined the rate of N1 in our institution.

    Methods:

    A point-prevalence study of N1 and antibiotic prescribing was conducted. On July 16 and 17, 2001, all inpatients were surveyed for N1, risk factors, pathogens isolated, and antibiotics prescribed and their indication. NIs were diagnosed according to CDC criteria. Cost of antibiotic acquisition was calculated by treatment indication.

    Setting:

    Tertiary-care referral center in Malaysia.

    Patients:

    All inpatients during the time of the study.

    Results:

    Five hundred thirty-eight patients were surveyed. Seventy-five had 103 NIs for a prevalence of 13.9%. The most common NIs were urinary tract infections (12.29-6), pneumonia (21.4%), laboratory-confirmed bloodstream infections (12.2%), deep surgical wound infections (11.2%), and clinical sepsis (22.4%). Pseudomonas aeruginosa, MRSA, and MSSA were the most common pathogens. Two hundred thirty-seven patients were taking 347 courses of antibiotics, for an overall prevalence of antibiotic use of 44%. N1 treatment accounted for 36% of antibiotic courses prescribed but 47% of antibiotic cost. Cost of antibiotic acquisition for N1 treatment was estimated to be approximately 2 million per year (Malaysian dollars).

    Conclusion:

    Whereas the rate of N1 is relatively high at our center compared with rates from previous reports, antibiotic use is among the highest reported in any study of this kind. Further research into this high rate of antibiotic use is urgently required.

Concise Communications

Original Articles

  • Healthcare-Associated Staphylococcus aureus Bacteremia and the Risk for Methicillin Resistance: Is the Centers for Disease Control and Prevention Definition for Community-Acquired Bacteremia Still Appropriate?

  • Olivier Lesens, Yves Hansmann, Eimar Brannigan, Susan Hopkins, Pierre Meyer, Brian O'Connel, Gilles Prévost, Colm Bergin, Daniel Christmann
  • Published online by Cambridge University Press:
    21 June 2016, pp. 204-209
  • Objective:

    To evaluate a new classification for bloodstream infections that differentiates hospital acquired, healthcare associated, and community acquired in patients with blood cultures positive for Staphylococcus aureus.

    Design:

    Prospective, observational study.

    Setting:

    Three tertiary-care, university-affiliated hospitals in Dublin, Ireland, and Strasbourg, France.

    Patients:

    Two hundred thirty consecutive patients older than 18 years with blood cultures positive for S. aureus.

    Methods:

    S. aureus bacteremia (SAB) was defined as hospital acquired if the first positive blood culture was performed more than 48 hours after admission. Other SABs were classified as healthcare associated or community acquired according to the definition proposed by Friedman et al. When available, strains of methicillin-resistant Staphylococcus aureus (MRSA) were analyzed by pulsed-field gel electrophoresis (PFGE).

    Results:

    Eighty-two patients were considered as having community-acquired bacteremia according to the Centers for Disease Control and Prevention (CDC) classification. Of these 82 patients, 56% (46) had healthcare-associated SAB. MRSA prevalence was similar in patients with hospital-acquired and healthcare-associated SAB (41% vs 33%; P > .05), but significantly lower in the group with community-acquired SAB (11%; P < .03). PFGE of MRSA strains showed that most community-acquired and healthcare-associated MRSA strains were similar to hospital-acquired MRSA strains. On multivariate analysis, Friedman's classification was more effective than the CDC classification for predicting MRSA.

    Conclusion:

    These results support the call for a new classification for community-acquired bacteremia that would account for healthcare received outside the hospital by patients with SAB.

  • Surveillance and Infection Control in an Intensive Care Unit

  • Giovanni Battista Orsi, Massimiliano Raponi, Cristiana Franchi, Monica Rocco, Carlo Mancini, Mario Venditti
  • Published online by Cambridge University Press:
    21 June 2016, pp. 321-325
  • Objective:

    To evaluate the effect of an infection control program on the incidence of hospital-acquired infection (HAI) and associated mortality.

    Design:

    Prospective study.

    Setting:

    A 2,000-bed, university-affiliated hospital in Italy.

    Patients:

    All patients admitted to the general intensive care unit (ICU) for more than 48 hours between January 2000 and December 2001.

    Methods:

    The infection control team (ICT) collected data on the following from all patients: demographics, origin, diagnosis, severity score, underlying diseases, invasive procedures, HAI, isolated microorganisms, and antibiotic susceptibility.

    Interventions:

    Regular ICT surveillance meetings were held with ICU personnel. Criteria for invasive procedures, particularly central venous catheters (CVCs), were modified. ICU care was restricted to a team of specialist physicians and nurses and ICU antimicrobial therapy policies were modified.

    Results:

    Five hundred thirty-seven patients were included in the study (279 during 2000 and 258 in 2001). Between 2000 and 2001, CVC exposure (82.8% vs 71.3%; P < .05) and mechanical ventilation duration (11.2 vs 9.6 days) decreased. The HAI rate decreased from 28.7% in 2000 to 21.3% in 2001 (P < .05). The crude mortality rate decreased from 41.2% in 2000 to 32.9% in 2001 (P < .05). The most commonly isolated microorganisms were nonfermentative gram-negative organisms and staphylococci (particularly MRSA). Mortality was associated with infection (relative risk, 2.11; 95% confidence interval, 1.72-2.59; P <.05).

    Conclusion:

    Routine surveillance for HAI, coupled with new measures to prevent infections and a revised policy for antimicrobial therapy, was associated with a reduction in ICU HAIs and mortality.

Back matter

  • ICE volume 26 issue 6 Cover and Back matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. b1-b3
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Concise Communication

Medical News

SHEA Position Paper

Front matter

  • ICE volume 26 issue 1 Front matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. f1-f5
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  • ICE volume 26 issue 4 Cover and Front matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. f1-f8
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Medical News

Back matter

  • ICE volume 26 issue 1 Back matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. b1-b2
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Concise Communications

Back matter

  • ICE volume 26 issue 4 Cover and Back matter

  • Published online by Cambridge University Press:
    21 June 2016, pp. b1-b2
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Medical News

Page 9 of 10