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livevaccines, etc ; BCG vaccine; immunogenicity; tuberculosis; vaccination; Show all 5 Subjects
Abstract:
... The BCG vaccine will, in 2021, have been in use for 100 years. Much remains to be understood, including the reasons for its variable efficacy against pulmonary tuberculosis in adults. This review will discuss what has been learnt about the BCG vaccine in the last two decades, and whether this new information can be exploited to improve its efficacy, by enhancing its ability to induce either antige ...
livevaccines, etc ; bioprocessing; filtration; porosity; viral vaccines; Show all 5 Subjects
Abstract:
... Prefilters are widely used to enhance the performance of normal flow filtration steps in bioprocessing; however little is known about the potential benefits of prefiltration in the sterile filtration of viral vaccines and other large particle biotherapeutics. Sterile filtration experiments were performed with a live-attenuated viral vaccine and model nanoparticle suspension, both of which have a s ...
livevaccines, etc ; clinical examination; immunogenicity; stakeholders; surveys; viruses; yellow fever; Show all 7 Subjects
Abstract:
... The current WHO Recommendations to assure the quality, safety and efficacy of live attenuated yellow fever vaccines were adopted in 2010. This document recommends that vaccine virus master and working seed lots should be tested for viscerotropism, immunogenicity and neurovirulence in monkeys. A vaccine manufacturer has reported, recently, discrepancies on the clinical scoring of monkeys during ass ...
livevaccines, etc ; Infectious bronchitis virus; antigens; egg production; vaccination; Massachusetts; Show all 6 Subjects
Abstract:
... To achieve long term protection of laying and breeding hens against aberrant egg production caused by infectious bronchitis virus (IBV), a vaccination programme incorporating both live-attenuated and inactivated IBV vaccines is required. High quality IBV vaccines of both types are widely available, but the number of IBV variants of global importance continues to increase and it is not possible to ...
livevaccines, etc ; Adenoviridae; chickens; polymerase chain reaction; serotypes; viruses; China; Show all 7 Subjects
Abstract:
... Group-I Fowl adenovirus (FAdV) is still widespread in China's chicken farms, leading to huge economic losses. The traditional PCR method, which can detect all serotypes at the same time, is not sensitive enough to obtain accurate results, especially in some samples containing only a low titer of virus, such as contaminated live vaccine. In order to solve this problem, this study developed a dot bl ...
livevaccines, etc ; antibodies; decline; humoral immunity; measles; risk; vaccination; virus transmission; Show all 8 Subjects
Abstract:
... Measles is one of the most contagious diseases known to man. Despite the existence of a safe and effective live attenuated vaccine, measles can appear in vaccinated individuals. Paradoxically, breakthrough cases increase as vaccination coverage in the general population rises. In measles endemic areas, breakthrough cases represent less than 10% of total infections, while in areas with high vaccina ...
livevaccines, etc ; encephalitis; fetal death; genotype; public health; viral vaccines; viruses; Show all 7 Subjects
Abstract:
... Expansion of genotype I (GI) Japanese encephalitis viruses (JEV) has resulted in the replacement of the dominant genotype III (GIII) viruses, raising serious public health concerns for using GIII virus-derived vaccines to effectively control JEV epidemics. Therefore, this study used swine as the model to estimate the effectiveness of GIII live-attenuated vaccine against GI virus infection by compa ...
livevaccines, etc ; DNA; aquaculture; fish; mutants; probiotics; synthetic peptides; therapeutics; vaccine development; Show all 9 Subjects
Abstract:
... Globally, aquaculture has faced serious economic problems due to bacterial, viral, and various other infectious diseases of different origins. Even though such diseases are being detected and simultaneously treated with several therapeutic and prophylactic methods, the broad-spectrum activity of vaccines plays a vital role as a preventive measure in aquaculture. However, treatments like use of ant ...
livevaccines, etc ; amino acids; genetic stability; phenotype; virulence; virus replication; yellow fever; Show all 7 Subjects
Abstract:
... We assessed the genetic and phenotypic characteristics of a yellow fever vaccine candidate, which was cloned from a YF-VAX substrain selected for growth in Vero cells (vYF-247), during the manufacturing process from the master seed lot (MSL) and working seed lot (WSL) through to the drug substance (DS) stage. There were nine minor nucleotide variants observed from the MSL to the DS stage, of which ...
Alexandre Flageul; Chantal Allée; Céline Courtillon; Véronique Béven; Hélène Quenault; Yannick Blanchard; Michel Amelot; David Courtois; Sjaak De Wit; Nicolas Eterradossi; Béatrice Grasland; Paul A. Brown
livevaccines, etc ; Infectious bronchitis virus; RNA; chicken industry; evolution; genome; infectious bronchitis; viruses; Show all 8 Subjects
Abstract:
... Infectious Bronchitis virus (IBV) continues to cause significant economic losses for the chicken industry despite the use of many live IBV vaccines around the world. Several authors have suggested that vaccine-induced partial protection may contribute to the emergence of new IBV strains. In order to study this hypothesis, three passages of a challenge IBV were made in SPF chickens sham inoculated ...
livevaccines, etc ; Murcia-Granada; Saanen; biosecurity; enzootic diseases; goats; morbidity; mortality; research; vaccination; Show all 10 Subjects
Abstract:
... Goatpox in small ruminants is the most acute pox disease in domestic animals, playing an important role in their health. Vaccination and biosecurity are the two main strategies to control the disease in countries where goatpox is enzootic. In this study, the susceptibility and reactions of three pure breeds (Saanen, Alpine, and Murcia-Granada) and two hybrid breeds (Saanen-Mahabadi and Alpine-Maha ...
livevaccines, etc ; Betaarterivirus suid 1; farms; immunization; porcine reproductive and respiratory syndrome; swine; viruses; Show all 7 Subjects
Abstract:
... Porcine reproductive and respiratory syndrome (PRRS) is one of the most important diseases of swine causing severe economic losses worldwide, therefore intensive efforts are taken to eliminate PRRS virus (PRRSV) from infected herds for complete eradication. The most efficient, fastest but at the same time the most expensive eradication method is depopulation-repopulation. In order to reduce costs, ...
livevaccines, etc ; blood serum; enzootic diseases; immunity; neutralization; neutralization tests; vaccination; virology; virulence; viruses; Show all 10 Subjects
Abstract:
... In this study, the duration of immunity following a single-dose vaccination using an attenuated live goatpox vaccine (GTPV/Uttarkashi/1978 strain) was evaluated in goatpox-seronegative goats for 52 months. Long-term immunity was evaluated by clinical protection upon virulent virus challenge and serum neutralization assay applied to serum samples. The rise in the level of GTPV-specific antibodies w ...
livevaccines, etc ; Bordetella bronchiseptica; Pasteurella multocida; chromosomes; genes; interleukin-10; mice; toxins; vaccination; virulence; Show all 10 Subjects
Abstract:
... Dermonecrotic toxin (DNT) is an important bacterial virulence factor produced by the zoonotic pathogens Bordetella bronchiseptica and Pasteurella multocida. This study aims to explore the possibility of expressing different fragments of P. multocida toxin (PMT) in the chromosome of attenuated B. bronchiseptica to generate single-component mucosal vaccine candidates. To achieve this, a 954-bp fragm ...
livevaccines, etc ; Yellow fever virus; amino acids; genetic variation; nucleotide sequences; viruses; yellow fever; Show all 7 Subjects
Abstract:
... The disease yellow fever was prevented by two live attenuated vaccines, strains 17D and French neurotropic vaccine (FNV), derived by serial passage of wild-type (WT) strains Asibi and French Viscerotropic virus (FVV), respectively. Both 17D and FNV displayed decreased genetic diversity and resistance to the antiviral Ribavirin compared to their WT parental strains, which are thought to contribute ...
James S. Robertson; Ursula Loizides; Akinola Adisa; Ana López de la Rica Manjavacas; Vicente Rodilla; Colette Strnadova; Karin Weisser; Raffaella Balocco
livevaccines, etc ; COVID-19 infection; Severe acute respiratory syndrome coronavirus 2; World Health Organization; viruses; Show all 5 Subjects
Abstract:
... International Nonproprietary Names (INN) are assigned by the World Health Organization (WHO) to pharmaceutical substances to ensure global recognition by a unique name. INN facilitate safe prescribing through naming consistency, efficient communication and exchange of information, transnational access and pharmacovigilance of medicinal products. Traditional vaccines such as inactivated or live-att ...
livevaccines, etc ; colostrum; diarrhea; immunity; milk; mortality; pork; pork industry; transcription (genetics); vaccination; virulence; viruses; Show all 12 Subjects
Abstract:
... Porcine epidemic diarrhea (PED), causing up to 100% mortality in neonatal pigs, is a highly contagious enteric disease caused by PED virus (PEDV). The highly virulent genogroup 2 (G2) PEDV emerged in 2010 and has caused huge economic losses to the pork industry globally. It was first reported in the US in 2013, caused country-wide outbreaks, and posed tremendous hardship for many pork producers in ...
... From 2013 to 2016, the H1N1 component of live, attenuated influenza vaccine (LAIV) performed very poorly in contrast to the inactivated influenza vaccine. We utilized a primary, differentiated human nasal epithelial cell (hNEC) culture system to assess the replication differences between isogenic LAIVs containing the HA segment from either A/Bolivia/559/2013 (rBol), which showed poor vaccine effic ...
... Classical Bartha-K61 strains could not provide complete protection against the emerging highly virulent pseudorabies virus (PRV) variant strains, which has caused great economic losses to swine industry in China. In this study, a gE/gI/TK-deleted PRV vaccine strain based on a circulating PRV variant strain HeB12 was generated by serial passages in Vero cells and a lyophilized formulation was prepa ...
... The control of diseases caused by protozoan parasites is one of the United Nations' Sustainable Development Goals. In recent years much research effort has gone into developing a new generation of live attenuated vaccines (LAVs) against malaria, Chagas disease and leishmaniasis. However, there is a bottleneck related to their biosafety, production, and distribution that slows downs further develop ...