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[Epidemiological characteristics of severe acute respiratory syndrome in Tianjin and the assessment of effectiveness on measures of control].
Zhonghua Liu Xing Bing Xue Za Zhi. 2003 Jul; 24(7):565-9.ZL

Abstract

OBJECTIVE

To analyze the epidemiologic characteristics of severe acute respiratory syndrome (SARS) and to evaluate the effectiveness on its major control measures in Tianjn.

METHODS

Adopting two case reports 1 and 2, designed by the Tianjin Centers for Disease Control and Prevention to develop a unified case-tracing table including the map of the distribution of close contacts to SARS patients. With those methods, investigation on patients and their close contacts at hospital wards, families, communities and institutions of the patients were carried out.

RESULTS

From April 13 through May 8, 2003, there were 175 SARS cases including imported ones, were identified with an incidence rate of 1.9 cases per 100,000. Among them, 14 died with a fatality of 8.0%. The whole process of epidemic in Tianjin was less than one month with the following features: (1) 93.7% of the total SARS cases in Tianjin were directly or indirectly transmitted by a super-spreader. (2) 68.6% of the total SARS patients were concentrated in 3 hospitals A, B and C which was menifastated in 'clustering'. Through study on the rest of the SARS patients, results showed that 16.8% of them were transmitted through family close contact and 2.3% due to contact to colleagues. However, 12.6% of the patients were not able to show evidence that they had any contact to a diagnosed SARS patient. At the early stage of the epidemic, a number of medical practitioners were infected, taking up 38.2% of the total SARS cases. Among the total number of 1 975 medical workers who participated in the SARS medical cares and treatments, 3.4% of them got infected. During the outbreak, all index cases and chains of transmission seemed to be clear, with only 3 patients not able to be traced for the source of infection, taking up 2% of the total SARS patients in Tianjin. Among the 10 index cases, only the super spreader and another one index case transmitted the virus to their contacts but the rest of index cases did not cause any secondary infection.

CONCLUSION

Though SARS is clinically severe and can be spreaded quickly, the epidemic can be under control within a short period of time if chains of SARS transmission are broken down and effective measures as isolation and quarantine against patients as well as underscoring awareness among the publics in a scientific way, being carried out.

Authors+Show Affiliations

Wang JX
Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China.
Feng HY
No affiliation info available
Liu D
No affiliation info available
Zhang ZL
No affiliation info available
Shan AL
No affiliation info available
Zhu XJ
No affiliation info available
Gao ZG
No affiliation info available
Wang XD
No affiliation info available
Xia YY
No affiliation info available
Chen Q
No affiliation info available

MeSH

AdolescentAdultAgedChinaContact TracingCross InfectionDisease OutbreaksFamily HealthFemaleHumansIncidenceInfectious Disease Transmission, Patient-to-ProfessionalMaleMiddle AgedSevere Acute Respiratory SyndromeSurveys and Questionnaires

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

12975009

Citation

Wang, Jie-xiu, et al. "[Epidemiological Characteristics of Severe Acute Respiratory Syndrome in Tianjin and the Assessment of Effectiveness On Measures of Control]." Zhonghua Liu Xing Bing Xue Za Zhi = Zhonghua Liuxingbingxue Zazhi, vol. 24, no. 7, 2003, pp. 565-9.
Wang JX, Feng HY, Liu D, et al. [Epidemiological characteristics of severe acute respiratory syndrome in Tianjin and the assessment of effectiveness on measures of control]. Zhonghua Liu Xing Bing Xue Za Zhi. 2003;24(7):565-9.
Wang, J. X., Feng, H. Y., Liu, D., Zhang, Z. L., Shan, A. L., Zhu, X. J., Gao, Z. G., Wang, X. D., Xia, Y. Y., & Chen, Q. (2003). [Epidemiological characteristics of severe acute respiratory syndrome in Tianjin and the assessment of effectiveness on measures of control]. Zhonghua Liu Xing Bing Xue Za Zhi = Zhonghua Liuxingbingxue Zazhi, 24(7), 565-9.
Wang JX, et al. [Epidemiological Characteristics of Severe Acute Respiratory Syndrome in Tianjin and the Assessment of Effectiveness On Measures of Control]. Zhonghua Liu Xing Bing Xue Za Zhi. 2003;24(7):565-9. PubMed PMID: 12975009.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Epidemiological characteristics of severe acute respiratory syndrome in Tianjin and the assessment of effectiveness on measures of control]. AU - Wang,Jie-xiu, AU - Feng,Hong-you, AU - Liu,Dong, AU - Zhang,Zhi-lun, AU - Shan,Ai-lan, AU - Zhu,Xiang-jun, AU - Gao,Zhi-gang, AU - Wang,Xu-dong, AU - Xia,Ying-yi, AU - Chen,Qian, PY - 2003/9/17/pubmed PY - 2004/12/16/medline PY - 2003/9/17/entrez SP - 565 EP - 9 JF - Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi JO - Zhonghua Liu Xing Bing Xue Za Zhi VL - 24 IS - 7 N2 - OBJECTIVE: To analyze the epidemiologic characteristics of severe acute respiratory syndrome (SARS) and to evaluate the effectiveness on its major control measures in Tianjn. METHODS: Adopting two case reports 1 and 2, designed by the Tianjin Centers for Disease Control and Prevention to develop a unified case-tracing table including the map of the distribution of close contacts to SARS patients. With those methods, investigation on patients and their close contacts at hospital wards, families, communities and institutions of the patients were carried out. RESULTS: From April 13 through May 8, 2003, there were 175 SARS cases including imported ones, were identified with an incidence rate of 1.9 cases per 100,000. Among them, 14 died with a fatality of 8.0%. The whole process of epidemic in Tianjin was less than one month with the following features: (1) 93.7% of the total SARS cases in Tianjin were directly or indirectly transmitted by a super-spreader. (2) 68.6% of the total SARS patients were concentrated in 3 hospitals A, B and C which was menifastated in 'clustering'. Through study on the rest of the SARS patients, results showed that 16.8% of them were transmitted through family close contact and 2.3% due to contact to colleagues. However, 12.6% of the patients were not able to show evidence that they had any contact to a diagnosed SARS patient. At the early stage of the epidemic, a number of medical practitioners were infected, taking up 38.2% of the total SARS cases. Among the total number of 1 975 medical workers who participated in the SARS medical cares and treatments, 3.4% of them got infected. During the outbreak, all index cases and chains of transmission seemed to be clear, with only 3 patients not able to be traced for the source of infection, taking up 2% of the total SARS patients in Tianjin. Among the 10 index cases, only the super spreader and another one index case transmitted the virus to their contacts but the rest of index cases did not cause any secondary infection. CONCLUSION: Though SARS is clinically severe and can be spreaded quickly, the epidemic can be under control within a short period of time if chains of SARS transmission are broken down and effective measures as isolation and quarantine against patients as well as underscoring awareness among the publics in a scientific way, being carried out. SN - 0254-6450 UR - https://www.unboundmedicine.com/medline/citation/12975009/[Epidemiological_characteristics_of_severe_acute_respiratory_syndrome_in_Tianjin_and_the_assessment_of_effectiveness_on_measures_of_control]_ DB - PRIME DP - Unbound Medicine ER -