The risk of acquiring Q fever on farms: a seroepidemiological study.

Thomas, Daniel; Treweek, L; Salmon, R. L.; Kench, S. M.; Coleman, T. J.; Meadows, Donella H.; Morgan‐Capner, P.; Caul, E.O.

doi:10.1136/oem.52.10.644

Cited by 54 publications

(47 citation statements)

References 16 publications

(13 reference statements)

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“…It provides evidence that Q fever has not been endemic in sheep flocks in the mid-north of SA. Many serological surveys of occupational groups overseas have indicated that farmers have shown a proportion already positive for Q fever, 27% in English farmers [34] and 24% in sheep farmers in Sweden [35]. This outbreak supports the findings from Queensland that farmers are an important, often overlooked and harder to reach, occupational group at high risk of acquiring Q fever infection in Australia [15].…”

Section: Discussionsupporting

confidence: 77%

A windy day in a sheep saleyard: an outbreak of Q fever in rural South Australia

2014

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In December 2004, the Department of Human Services investigated an outbreak of Q fever in South Australia. A case-control study tested an association between attending a local saleyard and human illness. A case was defined as a person with clinical illness and evidence of seroconversion or high phase II IgM. Controls were selected from a database of community controls matched on sex, age group and postcode. Matched analysis of the first 15 cases with 45 controls indicated that contracting Q fever was associated with attending the saleyard on one particular day (adjusted odds ratio 15·3, 95% confidence interval 1·7-undefined, P = 0·014). Saleyard conditions were windy and conducive for airborne dispersal of contaminated particles. In total, 25 cases were detected. Of these, 22 cases had attended a local saleyard on the same day. This outbreak suggests cases were probably infected by a single exposure at a saleyard from infected sheep and dust. The investigation resulted in an increase in the local uptake of Q fever vaccination and extension of the Australian national vaccination programme.

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Section: Discussionsupporting

confidence: 77%

A windy day in a sheep saleyard: an outbreak of Q fever in rural South Australia

2014

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“…This fin ding is con cor dant with the stu di es from Uni ted King dom and Spa in that fo und sig ni fi cantly hig her se rop re va len ce among tho se wor king in a farm en vi ron ment, working in ag ri cul tu re or ani mal hus bandry. 20 In our study the pre va len ce of C. bur ne ti i infec ti on was sig ni fi cantly hig her in men (63%) than wo men (37%), as ex pec ted. This is be ca u se, in this are a, mostly men are in vol ved in oc cu pa ti ons deman ding clo se con tact with li ves tock.…”

Section: Discussionsupporting

confidence: 62%

“…26 In a se ro e pi de mi o lo gi cal study compa ring study and con trol co horts from the UK, the pre va len ce of C. bur ne ti i pha se II an ti bo di es we re sig ni fi cantly hig her in the study co hort (27%) than the con trol co hort (11%). 20 Ge ne rally, stu di es in dica te that the Q fe ver pre va len ce is hig her in ru ral zo nes com pa red to ur ban zo nes, 14,20,22,[27][28][29] ho we ver the re are so me stu di es re por ting no sig ni fi cant corre la ti on bet we en se ro po si ti vity and the pla ce of resi den ce. 19,23 In our study, the samp les we re ob ta i ned mostly from ru ral zo nes.…”

Section: Discussionmentioning

confidence: 99%

Türkiye’nin Doğusundaki Yüksek Riskli Gruplarda Coxiella burnetii Antikor Seroprevalansı

Berktaş¹,

Ceylan²,

Yaman³

et al. 2011

Turkiye Klinikleri J Med Sci

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A AB BS S T TR RA AC CT T O Ob b j je ec c t ti i v ve e:The ob jec ti ve of this study is to es ti ma te and eva lu a te the pre va len ce of an ti bo di es of Co xi el la bur ne tii (C. burnetii) in pe op le con si de red to be at risk; such as far mers, sla ugh ter ho u se-wor kers and butc hers in Eas tern re gi on of Tur key. The num ber of re le vant studi es con cer ning the sub ject is ina de qu a te es pe ci ally in our re gi on. M Ma a t te e r ri i a al l a an nd d M Me et t h ho od ds s: Fi ve hun dred fifty two se rum samp les we re col lec ted from the pe op le con si de red to be at risk of contac ting with C. bur ne ti i, such as far mers, abat to ir wor kers and butc hers in four ci ti es and the ir 14 dis tricts in the Eastern Tur key. Se rum samp les we re cen tri fu ged and sto red at -20 o C. The serum samp les we re tes ted with an ELI SA kit to de tect IgG an ti bo di es aga inst C. bur ne tii pha se II an ti gen in or der to de ter mi ne the pre va len ce of Q fe ver. R Re e s su ul lt ts s: : The me an se ro po si ti vity ra te across the re gi on was de tec ted as 36.6%. Among dif fe rent high risk pro fes si ons, the hig hest pre valen ce ra tes we re de tec ted in abat to ir wor kers (65.9%), fol lo wed by butc hers (42.9%), and far mers (32.8%). The pre va len ce ra tes among butc hers we re de tec ted as 63.2% in Bit lis, 39.1% in Van and 25% in Muş. Among far mers, the pre va len ce ra tes we re 36.6% in Bit lis, 34% in Van, and 18.2% in Muş. C Co on nc c l lu u s si i o on n: : Sig ni fi cantly high se ro po si ti vity ra tes among the pe op le with high risk pro fes si ons in the Eas tern Ana to li a is reported for the first time in this study. It is es sen ti al to iden tify the re ser vo irs in or der to di ag no se C. bur ne tii in fec ti on cor rectly. It is es sen ti al to take the ne ces sary con trol and pre ven ti on pre ca u ti ons in high-risk occupations due to high se ropo si ti vity ra tes determined in this study.K Ke ey y W Wo or rd ds s: : Co xi el la bur ne ti i; epi de mi o logy; Q fe ver; zo o no ses Ö ÖZ ZE ET T A Am ma aç ç: : Bu ça lış ma nın ama cı Tür ki ye'nin do ğu böl ge sin de ki çift çi ler, mez ba ha-iş çi le ri ve kasap lar gi bi risk al tın da ka bul edi len in san lar da Co xi el la bur ne ti i (C. burnetii) an ti kor pre va lan sı nı tah min et mek ve de ğer len dir mek tir. Özel lik le böl ge miz de ko nu ile il gi li ça lış ma la rın sa yı sı ye tersiz dir. G Ge e r re eç ç v ve e Y Yö ön n t te em ml le er r: : Tür ki ye' nin do ğu böl ge sin de ki dört il ve 14 il çe de, çift çi ler, mez ba ha iş çi le ri ve ka sap gi bi C. bur ne ti i ile te mas ris ki ol du ğu dü şü nü len in san lar dan 552'si nin se rum ör-ne ği top lan dı. Se rum ör nek le ri san tri füj edil di ve -20 o C' de sak lan dı.Q ate şi yay gın lı ğı nı be lir le mek için se rum ör nek le ri C. bur ne ti i faz II an ti je ni ne kar şı IgG an ti kor la rı tes pit eden bir ELISA ki ti ile test edil di. B Bu ul l g gu u l la ar r: : Böl ge de or ta la ma se ro po zi ti vi te ora ...

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“…C. burnetii differs from others rickettsia crucially in its resistance to physical conditions -such as extremes of temperature and desiccation. As a consequence, infection in an animal reservoir may result in wide dissemination of the organism in the environment [28,29]. Among exposed workers who reported using various personal protective equipment, all subjects reported never wearing a mask.…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence and occupational risk survey for Coxiella burnetii among exposed workers in Sicily, Southern Italy

Fenga¹,

Gangemi²,

Luca³

et al. 2015

Int J Occup Med Environ Health

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International Journal of Occupational Medicine and EnvironmentalThe aim of this survey was to assess the seroprevalence of antibodies against Coxiella burnetii (C. burnetii) in subjects at risk of exposure in Sicily, Southern Italy. Material and Methods: Prevalence of IgG antibodies to C. burnetii phase II antigens was evaluated by ELISA in a group of 140 workers at risk of exposure (38 veterinarians, 38 slaughterhouse workers, 44 livestock handlers, 20 laboratory and technical personnel) included in a medical surveillance program and in 42 control subjects. Positive samples were classified as suggestive of prior exposure to C. burnetii. Results: Antibodies against C. burnetii were detected in 88 out of 140 (62.9%) exposed workers and in 6 out of 42 (14.3%) subjects of the control group. The variables evaluated did not seem to have a significant effect on seropositivity to Coxiella with the exception of symptoms in the last 6 months preceding the survey. Conclusions: Our study demonstrated a high seroprevalence of C. burnetii in the group of exposed workers in comparison to non-exposed subjects of the control group. Clinical illness appears to be rare; nevertheless, physicians should consider Q fever in patients with compatible symptoms and occupational exposure to animals and their products. As aerosols represent the main route of infection in animals and humans, these workers are strongly advised to wear respiratory masks. In addition, occupational physicians should consider routine serologic evaluation and vaccination of occupationally exposed workers.

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The risk of acquiring Q fever on farms: a seroepidemiological study.

Cited by 54 publications

References 16 publications

A windy day in a sheep saleyard: an outbreak of Q fever in rural South Australia

A windy day in a sheep saleyard: an outbreak of Q fever in rural South Australia

Türkiye’nin Doğusundaki Yüksek Riskli Gruplarda Coxiella burnetii Antikor Seroprevalansı

Seroprevalence and occupational risk survey for Coxiella burnetii among exposed workers in Sicily, Southern Italy

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