A class Ⅰ lentogenic newcastle disease virus strain confers effective protection against the prevalent strains
In this study, an NDV isolate APMV-1/Chicken/China (SC)/PT3/2016 (hereafter referred as PT3) was identified as a class Ⅰ NDV and a lentogenic strain. The antigenic relationship between PT3 and 3 other NDV strains, including vaccine strain LaSota and 2 prevalent genotype Ⅶd and Ⅵb strains were analyzed. The protective efficacy of PT3 and LaSota against challenge with genotype Ⅶd and Ⅵb strains were assessed. The antigenic analysis result showed that 4 strains belong to the single serotype and the PT3 antiserum exhibited the highest HI titer against 3 other NDV strains. The results of protective efficacy showed that both of LaSota and PT3 could provide 100% survivability for infected chickens. However, PT3 performed better in inducing higher humoral responses and reducing virus shedding than the LaSota strain. Lentogenic strains from Class I NDV appear to be promising vaccine candidates for the control of ND, and allows for the easy discrimination of field NDV and vaccine strains.
Publication date: Available online 10 December 2019Source: Parasitology InternationalAuthor(s): L. Buffoni, M.M. Piva, P. Baska, K. Januszkiewicz, L.J. Norbury, K.C. Prior, D. Dezen, A.S. Silva, H. Wedrychowiczhz, R.E. MendesAbstractThe aim of this study was to assess the immune response and the protective efficacy elicited by the vaccination with the recombinant Fasciola hepatica myosin regulatory light chain (FhrMRLC) in Adjuplex® adjuvant against the infection with F. hepatica in rats. Four groups of 15 animals each were used for the study, one group was immunized with the recombinant F. hepatica MRLC in Adjuplex&re...
In this study, we generated two recombinant RABVs, rERAG333E/NiVG and rERAG333E/NiVF, expressing the NiV Malaysian strain attachment glycoprotein (NiV-G) or fusion glycoprotein (NiV-F) gene based on the rERAG333E vector platform. Both rERAG333E/NiVG and rERAG333E/NiVF displayed growth properties similar to those of rERAG333E and caused marked syncytia formation after co-infection in BSR cell culture. Adult and suckling mice intracerebrally inoculated with the recombinant RABVs showed NiV-G and NiV-F expression did not increase the virulence of rERAG333E. Oral vaccination with rERAG333E/NiVG either singularly or combined wi...
Publication date: Available online 11 December 2019Source: Fish &Shellfish ImmunologyAuthor(s): Saekil Yun, Seung-Jun Lee, Sib Sankar Giri, Hyoun Joong Kim, Sang Geun Kim, Sang Wha Kim, Se Jin Han, Jun Kwon, Woo Taek Oh, Se Chang ParkAbstractThe aim of this study was to develop and evaluate a novel route of administration for vaccinating fish against Aeromonas hydrophila infection using a dissolving microneedles (MNs) patch. The A. hydrophila JUNAH strain was inactivated with formalin and used as a vaccine antigen. It was mixed with dissolvable carboxymethyl cellulose (CMC) as the matrix material to produce the MNs pat...
Authors: Abstract "My biggest motivation is the discovery of new therapeutics to save lives. The most significant scientific advance of the last 100 years has been the discovery of polio vaccine …" Find out more about Yanli Zhao in his Author Profile. PMID: 31816177 [PubMed - in process]
Review recent changes in ACIP's recommendations for pneumococcal conjugate vaccine use in older adults.Morbidity &Mortality Weekly Report
[VOA] Members of measles vaccination teams in southern Cameroon have been attacked and beaten by locals who say the serums triggered side effects that sent 12 children to local hospitals.
Extending human papillomavirus (HPV) vaccination to middle-aged adults would be costly and likely yield only small added health benefits, according to a health economic model.Reuters Health Information
Samoa said on Saturday nearly 90% of eligible people had been vaccinated against measles as it lifted a two-day curfew imposed amid an outbreak that has killed 65 in recent weeks.Reuters Health Information
Even with measles outbreaks common in many parts of the world, doctors and parents are often not opting to have children vaccinated before international travel, a new study suggests.Reuters Health Information
(INSERM (Institut national de la sant é et de la recherche m é dicale)) In animals, a vaccine modifying the composition and function of the gut microbiota provides protection against the onset of chronic inflammatory bowel diseases and certain metabolic disorders, such as diabetes and obesity. This research was conducted by the team of Beno î t Chassaing, Inserm researcher at Institut Cochin (Inserm/CNRS/Universit é de Paris), whose initial findings have been published in Nature Communications.