Richard Weller

• Doctor of Veterinary Medicine
• Medical Professional at PQ

KEEN The factors associated with the spread and persistence of African swine fever (ASF) in the Caucasus region remain to be fully identified. It is assumed that large naive populations of domestic free-ranging and wild pigs are critical to disease transmission and maintenance. Nonetheless, 11 years since its epidemic introduction into the region i...

Since its introduction to the Republic of Georgia in 2007, African swine fever virus (ASFV) has spread across the Caucasus region, the Russian Federation, and some Eastern European countries. It is assumed that large populations of naive, domestic, free-ranging and wild pigs are vital to the transmission of the disease. Since its epidemic emergence...

Since its introduction to the Republic of Georgia in 2007, African swine fever virus (ASFV) has spread across the Caucasus region, the Russian Federation, and some Eastern European countries. It is assumed that large populations of naïve, domestic, free-ranging and wild pigs are vital to the transmission of the disease. Since its epidemic emergence...

The authors describe a study of the tuberculosis (TB) incidence in cattle exposed to low doses of radiation resulting from the Chernobyl (pronounced 'Chornobyl' in Ukrainian) nuclear plant catastrophe in 1986. The purpose of the study was to determine if ionising radiation influences the number of outbreaks of bovine TB and their severity on farms...

Bioterrorism is seen as a clear and present danger, although historically, acts of bioterrorism have been relatively unpredictable, rare and, thus far, small-scale events. The risk of an event is elevated by increasing contact among species and a global connectivity that provides rapid dissemination of infectious diseases regardless of origin. Virt...

A legally binding protocol to monitor compliance with Biological and Toxin Weapons Convention (BWC) could have a substantial impact on academia. This is because of the large number of academic sites, and the complexity of activities and business relationships found in academia. Several hundred academic institutions could be required to file declara...

This chapter discusses neoplastic and proliferative disorders in nonhuman primates. The chapter also provides an overview of neoplasia in nonhuman primates for veterinary practitioners, laboratory animal veterinarians, and scientists concerned with the clinical management of the diseases and the comparative aspects of oncology. Neoplasms are classi...

Single-strand conformational polymorphism (SSCP) analysis and direct sequencing methods were used to examine lung tumors derived from a cohort of beagle dogs with inhalational exposures to 239PuO2. These exposures were done at Pacific Northwest Laboratories where 18-month-old beagle dogs were given 239PuO2 by single-dose inhalation and allowed to l...

Paraneoplastic syndromes (PNS) comprise a diverse group of disorders that are associated with cancer but unrelated to the size, location, metastases, or physiologic activities of the mature tissue of origin. They are remote effects of tumors that may appear as signs, symptoms, or syndromes which can mimic other disease conditions encountered in vet...

A two-phase study was initiated to delineate the peripheral blood lymphocyte populations present in owl monkeys and to correlate those populations with immune response and parasitism during malaria infection. The goal of phase I of the study was to elucidate a monoclonal antibody panel that could be used to characterize peripheral blood mononuclear...

Often overlooked in the presence of neoplasia, PNDs constitute significant clinical entities in dogs with hematopoietic tumors. They may cause morbidity and mortality in such patients, with effects more severe than those caused by the associated tumor. Accurate clinical evaluation of these disorders is important in differential diagnosis and treatm...

Lymphosarcoma of domestic dogs is often accompanied by hypercalcemia. We have carried out studies to determine the usefulness of this common canine neoplasm as a model for paraneoplastic hypercalcemia. The study population consisted of 27 healthy control dogs, 13 with hypercalcemic lymphosarcoma, and 28 normocalcemic dogs with lymphosarcoma. Studie...