Detection of Brucella abortus and Brucellla melitensis in cattle and sheep from southern Cameroon

Mitterran, Kamga Ndefo Rolin; Barberine, Silatsa Assongo; Farikou, Oumarou; Simo, Gustave

doi:10.21203/rs.3.rs-21575/v2

Cited by 4 publications

(4 citation statements)

References 38 publications

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“…The same is not usually true for B. melitensis which is usually restricted to small ruminants in SSA(Sanogo et al, 2013). However, a recent unpublished study sampling cattle and sheep in central Cameroon detected both B. abortus and B. melitensis in both species(Mitterran et al, 2020).…”

mentioning

confidence: 95%

The epidemiology of bacterial zoonoses in pastoral and dairy cattle in Cameroon, Central Africa

Kelly

Jennings

Hunt

et al. 2021

Zoonoses and Public Health

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mentioning

confidence: 95%

The epidemiology of bacterial zoonoses in pastoral and dairy cattle in Cameroon, Central Africa

Kelly

Jennings

Hunt

et al. 2021

Zoonoses and Public Health

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“…The current study also reports dairy cattle PCR-positive for two Brucella species, B. abortus and B. melitensis and an unidentified Brucella species. Co-infections with more than one Brucella species have been reported in neighboring Rwanda and other African countries [6,28,31,32]. Furthermore, PCR-positivity for two Brucella species was attributed to the mingling of cattle and small ruminants [33,34].…”

Section: Discussionmentioning

confidence: 99%

Epidemiology of <em>Brucella</em> Species Circulating in Small Holder Dairy Cattle in Tanzania

Mengele,

Akoko,

Shirima

et al. 2024

Preprint

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Brucellosis is a zoonoses caused by bacteria of the genus Brucella, which causes economic losses in livestock and threatens public health. A cross-sectional study was conducted to determine the prevalence of Brucella species and risk factors in smallholder dairy cattle in six regions of Tanzania from July 2019 to October 2020. Dairy cattle (n=2048) were sampled from 1371 farms. DNA ex-tracted from blood and vaginal swabs was tested for Brucella using qPCR targeting the IS711 gene and positives were tested for the alkB marker for B. abortus and BMEI1172 marker for B. melitensis. The molecular prevalence was 3.5% (95% CI: 2.8-4.4) with the highest prevalence 8.1% (95%CI: 4.6-13.0) in Njombe region. B. melitensis was the predominant species detected (66.2%). Logistic regression revealed PCR positivity in dairy cattle was higher in the animals with a history of abortion (OR: 3.17, 95%CI: 1.05-9.62) and farms without dogs around (OR: 2.68, 95%CI: 1.12-5.90). Further studies are recommended to understand the source of B. melitensis and the implications to veterinary public health. Livestock keepers should be informed of the risks and biosecurity practices to reduce introduction and control Brucella. Cattle and small ruminant vaccination pro-grams could be implemented to control brucellosis in high-risk populations in the country.

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“…In Iran, the prevalence of B. melitensis is higher than B. abortus due to the fact that the population of small ruminants is larger than the population of cows [11,15,16]. On the other hand, B. abortus is the predominant species in Tanzania [17], Uganda [18], and southern Cameroon [19], in which the population of cows is larger than the population of small ruminants. Tese results stem from the fact that B. abortus and B. melitensis are the etiological factors of brucellosis in cows and sheep, respectively.…”

Section: Hamadan Province Lorestan Provincementioning

confidence: 99%

Investigation of the Proportion of Brucella abortus and Brucella melitensis in Sheep and Goat Milk

Rostami,

Rashidian,

Jaydari

et al. 2023

Veterinary Medicine International

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Despite the implementation of brucellosis eradication programs in Iran, this disease is still endemic and highly prevalent among ruminants in this country. The infection of small ruminants with Brucella abortus may play a significant role in the continuation of brucellosis among the herds of ruminants. This study investigated the proportion of B. abortus and Brucella melitensis in 150 samples of sheep and goat’s raw milk which were obtained from Lorestan and Hamadan provinces in the western part of Iran using the PCR method. The results revealed that among the Brucella spp. positive samples, 26.5% and 73.4% of the samples were infected with B. abortus and B. melitensis, respectively. The incidence rates of B. abortus among the sheep and goats samples were 6.8% and 12.5%, respectively. There was a significant difference between goats and sheep regarding the proportion of B. abortus. Three samples (2%) (2 goats and one sheep) were simultaneously infected with both B. melitensis and B. abortus. This article renews our knowledge about the causative agent of brucellosis in small ruminants and shows that B. abortus has a relatively high prevalence among those animals in the western regions of Iran, and its role as one of the main factors of abortion among small ruminants should not be ignored. The information provided in the present study is important for the surveillance program, as eradication programs and strategies to prevent the spread of B. abortus among small ruminants that have not been vaccinated against this microorganism may be adapted accordingly.

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Detection of Brucella abortus and Brucellla melitensis in cattle and sheep from southern Cameroon

Cited by 4 publications

References 38 publications

The epidemiology of bacterial zoonoses in pastoral and dairy cattle in Cameroon, Central Africa

The epidemiology of bacterial zoonoses in pastoral and dairy cattle in Cameroon, Central Africa

Epidemiology of <em>Brucella</em> Species Circulating in Small Holder Dairy Cattle in Tanzania

Investigation of the Proportion of Brucella abortus and Brucella melitensis in Sheep and Goat Milk

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