Prevalence of anti-Rift-Valley-fever IgM antibody in abattoir workers in the Nile delta during the 1993 outbreak in Egypt
In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally expo...
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| Published in | Bulletin of the World Health Organization Vol. 74; no. 2; pp. 155 - 158 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Genève
Organisation mondiale de la santé
01.03.1996
World Health Organization |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0042-9686 |
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| Abstract | In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally exposed abattoir workers (97% male; age 10-72 years) in 15 governorates of Egypt in November 1993. The overall prevalence of anti-RVF virus IgM antibody was 2% (range: 0% (7 governorates) to 10%). The highest prevalences were in Ismailia (10%) and Sharqîya (8%) Governorates. None of the seropositive subjects reported having experienced an episode of fever in the 2 months prior to the study. The prevalence of antibody was significantly higher (P < 0.05) among workers employed in high-risk jobs such as cutting animals' throats (relative risk (RR = 2.24)) and handling animal parts (RR = 2.37). The findings suggest that abattoir workers represent a useful sentinel population for surveillance of RVF. |
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| AbstractList | In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally exposed abattoir workers (97% male; age 10-72 years) in 15 governorates of Egypt in November 1993. The overall prevalence of anti-RVF virus IgM antibody was 2% (range: 0% (7 governorates) to 10%). The highest prevalences were in Ismailia (10%) and Sharqîya (8%) Governorates. None of the seropositive subjects reported having experienced an episode of fever in the 2 months prior to the study. The prevalence of antibody was significantly higher (P < 0.05) among workers employed in high-risk jobs such as cutting animals' throats (relative risk (RR = 2.24)) and handling animal parts (RR = 2.37). The findings suggest that abattoir workers represent a useful sentinel population for surveillance of RVF. In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally exposed abaittoir workers (97% male; age 10-72 years) in 15 governorates of Egypt in November 1993. The overall prevalence of anti-RVF virus IgM antibody was 2% (range: 0% (7 governorates) to 10%). The highest prevalences were in Ismailia (10%) and Sharqiya (8%) Governorates. None of the seropositive subjects reported having experienced an episode of fever in the 2 months prior to the study. The prevalence of antibody was significantly higher (P < 0.05) among workers employed in high-risk jobs such as cutting animals' throats (relative risk (RR = 2.24)) and handling animal parts (RR = 2.37). The findings suggest that abattoir workers represent a useful sentinel population for surveillance of RVF. In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally exposed abattoir workers (97% male; age 10-72 years) in 15 governorates of Egypt in November 1993. The overall prevalence of anti-RVF virus IgM antibody was 2% (range: 0% (7 governorates) to 10%). The highest prevalences were in Ismailia (10%) and Sharqîya (8%) Governorates. None of the seropositive subjects reported having experienced an episode of fever in the 2 months prior to the study. The prevalence of antibody was significantly higher (P < 0.05) among workers employed in high-risk jobs such as cutting animals' throats (relative risk (RR = 2.24)) and handling animal parts (RR = 2.37). The findings suggest that abattoir workers represent a useful sentinel population for surveillance of RVF.In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine whether RVF infection had spread to the Nile delta region of the country, we carried out a cross-sectional survey of 1181 occupationally exposed abattoir workers (97% male; age 10-72 years) in 15 governorates of Egypt in November 1993. The overall prevalence of anti-RVF virus IgM antibody was 2% (range: 0% (7 governorates) to 10%). The highest prevalences were in Ismailia (10%) and Sharqîya (8%) Governorates. None of the seropositive subjects reported having experienced an episode of fever in the 2 months prior to the study. The prevalence of antibody was significantly higher (P < 0.05) among workers employed in high-risk jobs such as cutting animals' throats (relative risk (RR = 2.24)) and handling animal parts (RR = 2.37). The findings suggest that abattoir workers represent a useful sentinel population for surveillance of RVF. |
| Audience | Professional Academic |
| Author | ARTHUR, R CUMMINGS, C BOTROS, B OLSON, J SOLIMAN, A EL-SHARKAWY, S SALIB, A ABU-ELYAZEED, R |
| AuthorAffiliation | Risk Assessment Branch, U.S. Naval Medical Research Unit No. 3, Cairo, Egypt |
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| Keywords | Rift valley fever Infectious focus Human Serology Occupational exposure Epidemiology Infection Viral disease Arbovirus disease Sanitary surveillance Public health Geographical variation Slaughterhouse |
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| References | 6538206 - J Clin Microbiol. 1984 Feb;19(2):225-9 6111141 - Trans R Soc Trop Med Hyg. 1980;74(6):815-6 575446 - Trans R Soc Trop Med Hyg. 1979;73(6):630-3 7901480 - Lancet. 1993 Nov 6;342(8880):1149-50 505918 - Vet Rec. 1979 Aug 11;105(6):124-5 6577119 - J Med. 1983;14(1):55-79 |
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| Snippet | In the early summer of 1993, an outbreak of Rift Valley fever (RVF) was reported among both humans and animals in Aswan Governorate, Upper Egypt. To determine... |
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| SubjectTerms | Abattoirs Adolescent Adult Aged Animals Antibodies, Viral - isolation & purification Arboviroses Biological and medical sciences Child Demographic aspects Egypt - epidemiology Female Human viral diseases Humans Immunoglobulin M Immunoglobulin M - isolation & purification Infectious diseases Male Measurement Medical sciences Middle Aged Miscellaneous Occupations Research Article Rift Valley fever Rift Valley Fever - epidemiology Rift Valley Fever - immunology Rift Valley Fever - transmission Rift Valley fever virus - immunology Risk Factors Seroepidemiologic Studies Tropical medicine Tropical viral diseases Viral diseases |
| Title | Prevalence of anti-Rift-Valley-fever IgM antibody in abattoir workers in the Nile delta during the 1993 outbreak in Egypt |
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