Influenza A (H1N1) Outbreak at a Psychiatric Closed Ward and Infection Control

Jung Hoon Kim; Kang Uk Lee

doi:10.4306/jknpa.2017.56.4.203

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Kim and Lee: Influenza A (H1N1) Outbreak at a Psychiatric Closed Ward and Infection Control

Original Article

Journal of Korean Neuropsychiatric Association 2017; 56(4): 203-210.

Published online: 30 November 2017

DOI: https://doi.org/10.4306/jknpa.2017.56.4.203

Influenza A (H1N1) Outbreak at a Psychiatric Closed Ward and Infection Control

Jung Hoon Kim, MD¹, Kang Uk Lee, MD, PhD^1,²

¹Department of Psychiatry, Kangwon National University Hospital, Chuncheon, Korea.

²Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Korea.

Address for correspondence: Kang Uk Lee, MD, PhD. Department of Psychiatry, Kangwon National University Hospital, 156 Baengnyeong-ro, Chuncheon 24289, Korea. Tel +82-33-258-2201, Fax +82-33-258-9436, kuleemd@kangwon.ac.kr

Received 17 October 2017 Revised 1 November 2017 Accepted 2 November 2017

Korean Neuropsychiatric Association

Abstract

Objectives

In this study, we propose effective policies for preventing transmission in the closed ward of psychiatry department at the subject hospital.

Methods

15 patients (9 in 2010, 3 in 2012, and 3 in 2013) infected by 2009 H1N1 Influenza A were treated with Tamiflu^® (Roche), and preventive Tamiflu^® was administered to patients without symptoms as well as healthcare workers. Infected patients were placed in cohorts or isolation rooms with droplet and contact precautions. The ward was cleaned daily with chloride. Influenza vaccinations were administered to immunosuppressed patients and long-term patients. In addition, respiratory etiquette posters were posted on the closed ward during the latter half of 2012. The 2013 outbreak involved the same controls as 2012.

Results

The incidence of outbreak among patients during the three outbreaks was 53%, 18%, and 19%. The incidence of infection among healthcare workers was 0% throughout the three periods, and there was no additional infection.

Conclusion

In a closed ward of the psychiatry department, there is constant contact between healthcare workers and patients. Therefore, the possibility of influenza transmission is expected to be high. It is important to maintain constant inspection to detect outbreaks. Effective infection control should be applied to block the virus.

Keywords: Influenza A (H1N1), Closed ward, Infection control, Disease outbreaks

Figures and Tables

Fig. 1

The number of cases and incidence of infected patients during the outbreak periods of 2009 H1N1 Influenza A virus.

Table 1

Isolation characteristics of inpatients during three 2009 Influenza A (H1N1) outbreak periods

Table 2

Infection control during three 2009 Influenza A (H1N1) outbreak periods

Table 3

Vaccination and antiviral medications for inpatients during 2009 Influenza A (H1N1) outbreak period

Table 4

Vaccination and antiviral medication for health professional during 2009 Influenza A (H1N1) outbreak period

Table 5

Demographic characteristics of 2009 Influenza A (H1N1) infected patients during outbreak period

Table 6

Clinical characteristics of 2009 Influenza A (H1N1) infected patients during outbreak period

RAT : Rapid Antigen Test, rRT-PCR : Real-time Reverse Transcriptase Polymerase Chain Reaction

Table 7

Comparison of duration from admission to the occurrence of symptoms among three outbreak periods

M : Mean, SD : Standard deviation

Notes

^{Conflicts of Interest} The authors have no financial conflicts of interest.

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