Monitoring of Soil-borne Parasites in Various Children’s Play Facilities in the Republic of Korea (2016-2021) Young Hwan Oh
- 주제(키워드) Children’s play facilities , Monitoring of parasites contamination , Soil-borne parasite , Toxocara spp. eggs
- 주제(DDC) 570
- 발행기관 아주대학교 일반대학원
- 지도교수 Ho-Joon Shin
- 발행년도 2024
- 학위수여년월 2024. 2
- 학위명 박사
- 학과 및 전공 일반대학원 의생명과학과
- 실제URI http://www.dcollection.net/handler/ajou/000000033523
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Monitoring of Soil-borne Parasites in Various Children’s Play Facilities in the Republic of Korea (2016-2021) In order to monitor the contamination of parasites (eggs) in children's play facilities, we investigated 11,429 soil samples from daycare centers, kindergartens, elementary schools, and parks across the country from January 2016 to December 2021. The national average rate was 8.7%, and the regions, which had higher parasites (eggs) positive rates than the average, were Jeollabuk-do (16.1%), Jeollanam-do (15.2%), Gwangju (12.3%), Busan (10.9%), Sejong (10.1%), and Gyeongsangnam-do (10.1%). Among the parasities (eggs) subject to investigation, the detection rates of Toxocara spp. by year ranged from 0.06 ~ 0.22% as follows: 1 case (0.22%) out of 472 in 2016, 2 cases (0.09%) out of 2,448 in 2017, 1 case (0.06%) out of 1,670 in 2018, 9 cases (0.39%) out of 2,348 in 2019, 4 cases (0.17%) out of 2,407 in 2020, and 1 case (0.16%) out of 2,084 in 2021. In particular, higher detection rates were observed in Seoul (0.63%), Jeju Island (0.50%), Gyeongsangnam-do (0.46%), Gwangju and Busan (0.35%), Gyeongsangbuk-do (0.24%), and Sejong (0.16%). As for the facilities, playgrounds of apartments (12.4%) showed the highest prevalence, followed by daycare centers (11.5%), parks (9.6%), kindergartens (8.7%), local playgrounds (8.1%), and elementary schools (6.5%). Among these, Toxocara spp. eggs were detected in daycare centers (0.37%), kindergartens (0.13%), elementary schools (0.2%), apartments (0.09%), and parks (0.14%). In addition, the older the completion date of construction, the higher the contamination rate with parasites was observed. In case of facilities managed with regular inspection cycle, playgrounds in parks (34.5%) showed the highest detection rate of recontamination, followed by daycare centers (25.2%), kindergartens (21.7%), elementary schools (20.5%), and apartments (20.4%). Additionally, children’s play facilities where Toxocara spp. eggs were re-detected included parks (1.17%) and elementary schools (0.2%). And Strongyloides spp. (2.16%), Ascaris spp. (1.7%), and Trichostrongylus spp. (0.4%) were most frequently found overall. Particularly, Toxocara spp. eggs were detected from play facilities nationwide at a rate of 0.16%. Consequently, there is an essential need for continuous monitoring of parasites contamination and regular education for preschool and school children to prevent soil-borne parasite infections. Keywords: Children’s play facilities, Monitoring of parasites contamination, Soil- borne parasite, Toxocara spp. eggs
more목차
I. INTRODUCTION 1
A. Soil-borne parasites (nematodes) 7
(1) Ascaris lumbricoides 7
(2) Enterobius vermicularis 9
(3) Hookworms (Ancylostoma duodenale and Necator americanus) 11
(4) Toxocara canis and Toxocara cati 14
(5) Strongyloides stercoralis 16
(6) Trichostrongylus orientalis 18
(7) Trichuris trichiura 19
B. Snail-borne parasites (trematodes) 22
(1) Clonorchis sinensis 25
(2) Paragonimus westermani 28
(3) Metagonimus yokogawai 30
C. Water-borne parasites (protozoa) 32
(1) Giardia lamblia 35
(2) Cryptosporidium spp. 39
(3) Entamoeba histolytica 41
D. Aims of this study 43
II. MATERIALS AND METHODS 47
A. Subjects of investigation 47
B. Classification of samples 47
(1) Samples by regions 47
(2) Play facilities by sampling year 48
(3) Play facilities by year of construction 48
(4) Regular (Occasional) commission for each play facility 48
C. Methods collecting samples 49
D. Parasites test method 51
E. Range of parasites (eggs) to be investigated 53
III. RESULTS 54
A. Soil-borne parasite detection rates by region 54
A.1. Positive rates of Toxocara spp. by region 56
B. Detection rates of soil-borne parasites (eggs) by play facilities 58
B.1. Positive rates of Toxocara spp. by types of play facilities 60
C. Multiple contamination rates by play facilities 62
D. The genus of parasites (eggs) detected in play facilities 63
E. Contamination rate of play facilities by the year of construction 64
E.1. Positive rates of Toxocara spp. by the year of construction 70
F. The status of soil-borne parasites (eggs) detection in regular inspection areas 71
F.1. Positive rates of Toxocara spp. in regular inspection areas 72
IV. DISCUSSION 76
V. CONCLUSION 87
REFERENCES 90
국문요약 107
