An outbreak of influenza A H1N1 in a specialized psychiatric hospital
10.12138/j.issn.1671-9638.20257098
- VernacularTitle:一起精神专科医院甲型H1N1流感暴发疫情的调查分析
- Author:
Junting XIAO
1
;
Paihan CHEN
;
Ting HU
;
Ying ZHOU
;
Weinan LI
;
Yebin CHEN
;
Zixi CAI
;
Gengna CHEN
Author Information
1. 汕头市疾病预防控制中心疾病控制科,广东汕头 515098
- Publication Type:Journal Article
- Keywords:
influenza;
epidemiological investigation;
outbreak;
specialized psychiatric hospital
- From:
Chinese Journal of Infection Control
2025;24(7):1001-1005
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the epidemiological characteristics and risk factors of an outbreak of influenza A H1N1 in a specialized psychiatric hospital in Shantou City,Guangdong Province,provide scientific basis for the pre-vention and control of respiratory infectious diseases in psychiatric health institutions.Methods Data of infection cases in this hospital in May 1-27,2024 were collected with on-site epidemiological investigation method,and were analyzed with descriptive epidemiological methods.The specimens of the cases were performed nucleic acid testing by reverse transcription polymerase chain reaction(RT-PCR)method.Results A total of 43 influenza-like cases in this outbreak have been reported,with an incidence of 16.67％,including 42 hospitalized patients and 1 healthcare worker.Among the 42 hospitalized patients,there were 41 males,with an incidence of 35.04％and 1 female with an incidence of 2.22％,there was a statistically significant difference in incidence between hospitalized patients of different genders(x2=18.23,P＜0.001).The epidemic curve shows that after the first case appeared on May 8,2024,the number of cases increased significantly from May 13,and reached its peak on May 17(n=17).31 pa-tients' throat swab specimens were collected,out of which 29(93.55％)were positive for influenza A H1N1 virus nucleic acid and 2(6.45％)were negative.Conclusion This epidemic is an outbreak of influenza A H1N1 in a psy-chiatric health institution,the epidemic curve shows a point source human-to-human transmission mode.Failure to effectively identify and isolate cases in the early stage can lead to the spread of the epidemic across floors and wards.It is necessary to regularly organize hospitalized patients and healthcare workers to receive influenza vaccines,strict-ly implement the health monitoring system,strengthen the control of external personnel,and enhance the early de-tection and emergency response capabilities for infectious disease outbreaks.
