Global Estimate of Human Brucellosis Incidence.

Brucellosis is a major public health concern worldwide, especially for persons living in resource-limited settings. Historically, an evidence-based estimate of the global annual incidence of human cases has been elusive. We used international public health data to fill this information gap through application of risk metrics to worldwide and regional at-risk populations.

If You're Not Confused, You're Not Paying Attention: Is Not Brucella.

Bacteria of the genus Brucella are facultative intracellular parasites that cause brucellosis, a severe animal and human disease. Recently, a group of taxonomists merged the brucellae with the primarily free-living, phylogenetically related spp. in the genus Brucella.

Intratracheal inoculation results in Brucella-associated reproductive disease in male mouse and guinea pig models of infection.

species are considered a significant cause of reproductive pathology in male and female animals. Importantly, can induce reproductive disease in humans. Reproductive pathogenesis and evaluation of newly developed countermeasures against brucellosis studies have traditionally utilized female animal models.

Primary and memory immune responses against rough are less robust compared to smooth and following intratracheal infection in mice.

is the cause of canine brucellosis, a globally distributed, zoonotic pathogen which primarily causes disease in dogs. is unique amongst the zoonotic spp. with its rough lipopolysaccharide, a trait typically associated with attenuation in gram-negative bacteria.

Human brucellosis: Widespread information deficiency hinders an understanding of global disease frequency.

Background: For decades, human brucellosis has been recognized worldwide as a significant cause of morbidity, yet the annual incidence of this disease remains unknown. We analyzed this frequency, using international reports (2005-2019), identifying information gaps, and distinguishing a possible path forward.

Methodology/principal Findings: A novel approach to estimating the incidence of this disease was explored.

When the Going Gets Rough: The Significance of Lipopolysaccharide Phenotype in Host-Pathogen Interactions.

is a facultatively intracellular bacterial pathogen and the cause of worldwide zoonotic infections, infamous for its ability to evade the immune system and persist chronically within host cells. Despite the frequent association with attenuation in other Gram-negative bacteria, a rough lipopolysaccharide phenotype is retained by and , which remain fully virulent in their natural canine and ovine hosts, respectively. While these natural rough strains lack the O-polysaccharide they, like their smooth counterparts, are able to evade and manipulate the host immune system by exhibiting low endotoxic activity, resisting destruction by complement and antimicrobial peptides, entering and trafficking within host cells along a similar pathway, and interfering with MHC-II antigen presentation.

AgSecure Africa Programme: A Blended Training Approach for Africa.

An innovative training program entitled "AgSecure Africa Programme was developed in partnership with the South African Agricultural Research Council-Onderstepoort Veterinary Research (ARC-OVR) to train veterinarians, animal health technicians, researchers and laboratory personnel. Three blended courses consisting of both virtual and in-person delivery were provided with the intent of contributing to the better prevention, detection and control of infectious diseases of livestock and poultry of significant importance for the region with a strong emphasis on transboundary animal diseases. A "train the trainer" model of instruction was employed to equip participants with the ability to train and share knowledge with colleagues and small-holder farmers in their various communities and regions.

Porcine Babesiosis Caused by sp. Suis in a Pot-Bellied Pig in South Africa.

Babesiosis is a worldwide, tick-borne disease of economic importance in livestock caused by spp., which are hemoparasitic piroplasms that target the host erythrocytes. Cattle, dogs, small ruminants, and wild ruminants are the species most commonly affected, while in cats, horses, and pigs, it is less frequently reported.

Characterization of epididymal and testicular histologic lesions and use of immunohistochemistry and PCR on formalin-fixed tissues to detect in male dogs.

In male dogs, frequently causes epididymitis, ultimately resulting in testicular atrophy and infertility. Although predominantly affects the epididymis, the misleading term "orchitis" is still commonly used by clinicians. Of additional concern, diagnosis in dogs remains challenging because of variable sensitivity and specificity of serologic assays and fluctuations in bacteremia levels in infected dogs, reducing the sensitivity of blood culture.

Evaluation of the safety profile of the vaccine candidate Brucella melitensis 16MΔvjbR strain in goats.

Small ruminant brucellosis is caused by the Gram negative cocci-bacillus Brucella (B.) melitensis, the most virulent Brucella species for humans. In goats and sheep, middle to late-term gestation abortion, stillbirths and the delivery of weak infected offspring are the characteristic clinical signs of the disease.

Scoping review of brucellosis in Cameroon: Where do we stand, and where are we going?

Brucellosis is a zoonotic disease known to be endemic to parts of western and sub-Saharan Africa. However, the epidemiology for humans and animals remains largely unknown in many of these countries with Cameroon being a typical example. Despite common knowledge that brucellosis affects livestock, the actual number of infected animals remains unknown.

Brucella abortus and Pregnancy in Mice: Impact of Chronic Infection on Fertility and the Role of Regulatory T Cells in Tissue Colonization.

Stealthy intracellular bacterial pathogens are known to establish persistent and sometimes lifelong infections. Some of these pathogens also have a tropism for the reproductive system, thereby increasing the risk of reproductive disease and infertility. To date, the pathogenic mechanism involved remains poorly understood.

Intratracheal Inoculation with Brucella melitensis in the Pregnant Guinea Pig Is an Improved Model for Reproductive Pathogenesis and Vaccine Studies.

Reproductive failure is the hallmark of brucellosis in animals. An uncommon but important complication in pregnant women who become acutely infected with is spontaneous pregnancy loss or vertical transmission to the fetus. Unfortunately, the mechanism behind reproductive failure is still obscure, partially due to the lack of a proper study model.

Brucellosis in the Middle East: Current situation and a pathway forward.

Brucellosis is a bacterial endemic zoonotic disease of global significance with detrimental impacts on public health and food animal production. It is caused by Brucella spp., an expanding group of pathogens able to infect various host species.

Evaluation of the Efficacy of the Brucella canis RM6/66 Δ Vaccine Candidate for Protection against B. canis Infection in Mice.

is a Gram-negative, facultative intracellular bacterium and the causative agent of canine brucellosis, a highly contagious disease of dogs that can be transmitted to humans. Unfortunately, no vaccine is available to prevent infection. We recently characterized the kinetics of infection in the mouse model, establishing the required dose necessary to achieve systemic infection.

Vaccine Candidate Brucella melitensis 16M Is Safe in a Pregnant Sheep Model and Confers Protection.

As a natural host species for , pregnant sheep offer an ideal model to evaluate vaccine candidates for safety. strain Rev. 1 has been used almost exclusively to prevent brucellosis in small ruminants, but it causes abortions when given to pregnant animals.

Building the Evidence Base for the Prevention of Raw Milk-Acquired Brucellosis: A Systematic Review.

The scientific evidence of the health risks associated with the consumption of raw milk has been known for a long time. However, less clear is the impact of acquiring infectious diseases from raw milk consumption in the United States (US) due to incomplete reporting of cases and the complex factors associated with the sale and consumption of raw milk. Investigations of this current study focused on human brucellosis, one of the infectious diseases commonly acquired through the consumption of raw milk and milk products, and which continues to be a public health threat worldwide.

Bench to Shop™: An Interdisciplinary Training Program for Transitioning of Transboundary Animal Disease Research to Commercialization.

Transboundary animal diseases (TADs) are livestock diseases characterized as highly contagious, fast-spreading, and capable of producing high morbidity and mortality. Accidental or intentional introduction of these diseases into the United States could devastate the economy, food security, and public health. Training of researchers, scientists and animal health workers is often limited to prevention and diagnosis with little emphasis on the importance of translating knowledge to the development of new products for the prevention, detection and control of outbreaks.

Immersion Foot Syndrome in 6 Equids Exposed to Hurricane Floodwaters.

Prolonged exposure to water, known as immersion foot syndrome in humans, is a phenomenon first described in soldiers during World War I and characterized by dermal ischemic necrosis. In this report, we describe the pathologic findings of a condition resembling immersion foot syndrome in 5 horses and 1 donkey with prolonged floodwater exposure during Hurricane Harvey. At necropsy, all animals had dermal defects ventral to a sharply demarcated "water line" along the lateral trunk.

Interaction of Brucella abortus with Osteoclasts: a Step toward Understanding Osteoarticular Brucellosis and Vaccine Safety.

Osteoarticular disease is a frequent complication of human brucellosis. Vaccination remains a critical component of brucellosis control, but there are currently no vaccines for use in humans, and no models for assessing the safety of candidate vaccines in reference to the development of bone lesions currently exist. While the effect of infection on osteoblasts has been extensively evaluated, little is known about the consequences of osteoclast infection.

Brucellosis in Colombia: Current Status and Challenges in the Control of an Endemic Disease.

Brucellosis is a zoonosis of nearly worldwide distribution. The disease is considered to be endemic in most of the developing countries with a substantial impact on both human and animal health as well as on the economy. The aim of this scoping review is to provide an overview of the brucellosis status in Colombia and the factors associated with its persistence, to highlight the strengths and gaps of the adopted countermeasures and to supply evidence to policy-makers on the best approaches to mitigate the disease burden.

Vaccine safety studies of S19 and S19Δ in pregnant swine.

Brucellosis in swine is caused by a bacterial infection of nearly worldwide distribution. is also transmissible to humans, dogs and cattle and is considered a reemerging disease of public health concern. To date, there is no effective vaccine for swine.

Characterization of Brucella canis infection in mice.

Canine brucellosis, caused by Brucella canis, is a disease of dogs and represents a public health concern as it can be transmitted to humans. Canine brucellosis is on the rise in the United States and there is currently no vaccine for use in dogs. Mice have been extensively utilized to investigate host-pathogen interactions and vaccine candidates for smooth Brucella species and could serve a similar role for studying B.

Correction: Characterization of an intratracheal aerosol challenge model of Brucella melitensis in guinea pigs.

[This corrects the article DOI: 10.1371/journal.pone.