Detection of enterotoxigenic staphylococcus aureus in the anterior naresof young adults studying in the Hong Kong Polytechnic University

Pao Yue-kong Library Electronic Theses Database

Detection of enterotoxigenic staphylococcus aureus in the anterior naresof young adults studying in the Hong Kong Polytechnic University

 

Author: Leung, Wing-fai
Title: Detection of enterotoxigenic staphylococcus aureus in the anterior naresof young adults studying in the Hong Kong Polytechnic University
Degree: M.Sc.
Year: 2001
Subject: Hong Kong Polytechnic University -- Students
College students -- Health and hygiene -- China -- Hong Kong
Staphylococcus aureus
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Nursing and Health Sciences
Pages: iii, 75 leaves : col. ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1573256
URI: http://theses.lib.polyu.edu.hk/handle/200/537
Abstract: The nasal carriage rate of enterotoxigenic Staphylococcus aureus among students studying in the Hong Kong Polytechnic University was determined. Of a total of 329 students sampled, 111 (33.7%) were carriers of S. aureus in their anterior nares, including 31(39.7%) of 78 biomedical science students, 28 (35.4%) of 79 nursing students and 52 (30.2%) of 172 hotel and catering management students. Thirty-five (31.5%) of these 111 S. aureus isolates were enterotoxigenic. Twenty-two (62.9%) produced staphylococcal enterotoxin A (SEA), 6(17.1%) produced SEB and 4(11.4%) produced SEC. Three isolates (8.6%) produced combinations of SEA, SEB and SED; SEA, SED and SEE; SEA and SEE respectively. No statistically significant association of carriage of enterotoxigenic S. aureus with sex and programmes of study were demonstrated. Regarding the susceptibility patterns of 111 S. aureus isolates, 93.7 % were resistant to penicillin. Increased resistance to erythromycin (22.5%) and tetracycline (14.4%) was observed. Two methicillin resistant S. aureus were isolated. With the exception of erythromycin, no significant association of antibiotic resistance with enterotoxin production was demonstrated. Sixty-nine biomedical science students had been sampled four times at regular intervals for a period of 18 months. Their nasal carriage patterns of S. aureus were classified into three categories including persistent carriers, intermittent carriers and non-carriers. Based on these classification, 14 (20.3%) were persistent carriers, 32 (46.4%) were intermittent carriers and 23(33.3%) were non-carriers. Six (38.9%) of the persistent carriers harbored enterotoxigenic S. aureus, whereas only 4 (17.6%) of the intermittent carriers carried enterotoxigenic S. aureus. The difference was statistically significant (P< 0.05, x2; odds ratio, 5.25 [95%CI, 1.184 to 23.278]). The finding that 33.7% of healthy adults in Hong Kong carried S. aureus in their anterior nares coupled with the fact that 31.5% of these isolates were enterotoxigenic should be of public health concern because they can readily contaminate foods and leading to an outbreak of food poisoning.

Files in this item

Files Size Format
b15732563.pdf 3.542Mb PDF
Copyright Undertaking
As a bona fide Library user, I declare that:
  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

     

Quick Search

Browse

More Information