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https://www.readbyqxmd.com/read/28820300/meningeal-worm-parelaphostrongylus-tenuis-as-a-cause-of-mortality-in-the-restored-elk-cervus-canadensis-population-in-missouri
#1
M Colter Chitwood, Barbara J Keller, Harith Saeed Al-Warid, Kelly Straka, Aaron M Hildreth, Lonnie Hansen, Joshua J Millspaugh
Meningeal worm (Parelaphostrongylus tenuis) is an important cause of mortality of elk (Cervus canadensis) in populations in the eastern US and has been implicated in the failure of several restoration attempts. From 2011 to 2013, the Missouri Department of Conservation translocated 108 adult and yearling elk from Kentucky (US) to southern Missouri (US) to establish a free-ranging population. From release in spring 2011 through August 2015, we monitored 167 elk (adult, yearling, and calf) to determine causes of mortality...
August 18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28817375/effect-of-maternal-antibody-transfer-on-antibody-dynamics-and-control-of-porcine-circovirus-type-2-infection-in-offspring
#2
Cheryl M T Dvorak, Brian J Payne, Jessica L Seate, Michael P Murtaugh
Sow immunity plays an important role in preventing viral infection and disease in newborn piglets. Vertical transmission of porcine circovirus type 2 (PCV2) may perpetuate porcine circovirus associated disease (PCVAD) in newborn and growing pigs. Hence, the immunological effects of maternal immunoglobulin transfer of PCV2-specific antibodies on PCV2 viremia and immune response in piglets in commercial swine herds were evaluated. Sow vaccination has been shown to reduce viral shedding and viremia, and increases the neutralizing antibody (NA) titers...
August 17, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28815434/measles-vaccination-is-best-for-children-the-argument-for-relying-on-herd-immunity-fails
#3
Johan Christiaan Bester
This article examines an argument which may negatively influence measles vaccination uptake. According to the argument, an individual child in a highly vaccinated society may be better off by being non-vaccinated; the child does not risk vaccine adverse effects and is protected against measles through herd immunity. Firstly, the conclusion of the argument is challenged by showing that herd immunity's protection is unreliable and inferior to vaccination. Secondly, the logic of the argument is challenged by showing that the argument is inherently self-defeating and therefore logically inconsistent...
August 16, 2017: Journal of Bioethical Inquiry
https://www.readbyqxmd.com/read/28814512/zoonotic-risk-pathogenesis-and-transmission-of-avian-origin-h3n2-canine-influenza-virus
#4
Hailiang Sun, Sherry Blackmon, Guohua Yang, Kaitlyn Waters, Tao Li, Ratanaporn Tangwangvivat, Yifei Xu, Daniel Shyu, Feng Wen, Jim Cooley, Lucy Senter, Xiaoxu Lin, Richard Jarman, Larry Hanson, Richard Webby, Xiu-Feng Wan
Two subtypes of influenza A virus (IAV), avian-origin canine influenza virus H3N2 (CIV-H3N2) and equine-origin CIV-H3N8, are enzootic in the canine population. Dogs have demonstrated seroconversion to diverse IAVs and naturally occurring reassortants of CIV-H3N2 and the 2009 H1N1 pandemic virus (pdmH1N1) have been isolated. We conducted a thorough phenotypic evaluation of CIV-H3N2 in order to assess its threat to human health. Using ferret-generated antisera we determined that CIV-H3N2 is antigenically distinct from contemporary human H3N2 IAVs, suggesting there may be minimal herd immunity in humans...
August 16, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28806926/evaluation-of-vaccination-herd-immunity-effects-for-anogenital-warts-in-a-low-coverage-setting-with-human-papillomavirus-vaccine-an-interrupted-time-series-analysis-from-2005-to-2010-using-health-insurance-data
#5
Kathrin Thöne, Johannes Horn, Rafael Mikolajczyk
BACKGROUND: Shortly after the human papillomavirus (HPV) vaccine recommendation and hence the reimbursement of vaccination costs for the respective age groups in Germany in 2007, changes in the incidence of anogenital warts (AGWs) were observed, but it was not clear at what level the incidence would stabilize and to what extent herd immunity would be present. Given the relatively low HPV vaccination coverage in Germany, we aimed to assess potential vaccination herd immunity effects in the German setting...
August 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28801154/progress-in-prophylactic-human-papillomavirus-hpv-vaccination-in-2016-a-literature-review
#6
Polona J Maver, Mario Poljak
Prophylactic human papillomavirus (HPV) vaccine represents a revolutionary step forward in preventing HPV-related cancers, especially cervical carcinoma. Alongside appropriate screening, it has the potential to dramatically reduce cervical cancer incidence and even eradicate it. Following extensive evaluations in clinical trials, the first decade of routine HPV vaccine use provides overwhelming evidence of the vaccines' safety and their real-life effectiveness. In 2016, further clinical trials showed high vaccine efficacy in adult women, especially those that were HPV DNA-negative at baseline, and indicated possible protection from HPV-related diseases after treatment of precancerous cervical lesions...
August 8, 2017: Vaccine
https://www.readbyqxmd.com/read/28783456/effect-of-booster-vaccination-with-inactivated-porcine-epidemic-diarrhea-virus-on-neutralizing-antibody-response-in-mammary-secretions
#7
Thomas Gillespie, Qinye Song, Megan Inskeep, Suzanne Stone, Michael P Murtaugh
Porcine epidemic diarrhea virus (PEDV) causes acute diarrhea, dehydration in pigs, and high mortality rates in piglets <3 weeks of age. Maternal immunity protects piglets, but information on vaccination before or after natural infection in endemically exposed sow herds is limited. Currently, the recovery goal in sow units infected with PEDV is to become fully naive again or use natural virus infection to develop immune gilts through a feedback program before introduction into the sow herd. Since neutralizing antibodies in the gut are critical for protection against enteric viral infections such as PEDV, we evaluated the effect of a conditionally licensed, adjuvanted inactivated PEDV vaccine on neutralizing antibody levels in milk and colostrum in both naive and previously naturally exposed sow herds...
August 7, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28783380/streptococcus-pneumoniae-serotype-19a-worldwide-epidemiology
#8
Raul Isturiz, Heather L Sings, Betsy Hilton, Adriano Arguedas, Ralf-René Reinert, Luis Jodar
Streptococcus pneumoniae causes mucosal and invasive diseases with high morbidity and mortality. Introduction of the 7-valent pneumococcal conjugate vaccine (PCV7) into routine infant immunization programs worldwide resulted in serotype 19A becoming a leading cause of the remaining pneumococcal disease burden in vaccinated and unvaccinated individuals. This article reviews the impact of the latest generation PCVs (10-valent PCV, PCV10, and 13-valent PCV, PCV13) on serotype 19A. Areas covered: This article covers immune responses elicited by PCV7, PCV10 and PCV13 against serotype 19A and their impact on nasopharyngeal (NP) carriage and disease in vaccinated and unvaccinated populations using data from surveillance systems, randomized controlled trials, and observational studies...
August 7, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28780089/short-communication-prevalence-of-digital-dermatitis-in-canadian-dairy-cattle-classified-as-high-average-or-low-antibody-and-cell-mediated-immune-responders
#9
S L Cartwright, F Malchiodi, K Thompson-Crispi, F Miglior, B A Mallard
Lameness is a major animal welfare issue affecting Canadian dairy producers, and it can lead to production, reproduction, and health problems in dairy cattle herds. Although several different lesions affect dairy cattle hooves, studies show that digital dermatitis is the most common lesion identified in Canadian dairy herds. It has also been shown that dairy cattle classified as having high immune response (IR) have lower incidence of disease compared with those animals with average and low IR; therefore, it has been hypothesized that IR plays a role in preventing infectious hoof lesions...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28770217/dairy-cows-naturally-infected-with-bovine-leukemia-virus-exhibit-abnormal-b-and-t-cell-phenotypes-after-primary-and-secondary-exposures-to-keyhole-limpet-hemocyanin
#10
Meredith C Frie, Kelly R B Sporer, Oscar J Benitez, Joseph C Wallace, Casey J Droscha, Paul C Bartlett, Paul M Coussens
Bovine leukemia virus (BLV) is a retrovirus that is highly prevalent in US dairy herds: over 83% are BLV infected and the within-herd infection rate can be almost 50% on average. While BLV is known to cause lymphosarcomas, only 5% or fewer infected cattle will develop lymphoma; this low prevalence of cancer has historically not been a concern to dairy producers. However, more recent research has found that BLV(+) cows without lymphoma produce less milk and have shorter lifespans than uninfected herdmates. It has been hypothesized that BLV infection interferes with normal immune function in infected cattle, and this could lead to reduced dairy production...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28760665/metritis-vaccination-in-holstein-dairy-heifers-using-a-herd-specific-multivalent-vaccine-effects-on-uterine-health-and-fertility-in-first-lactation
#11
M Freick, A Kunze, O Passarge, J Weber, S Geidel
In cattle, acute puerperal metritis (APM) compromises animal welfare and has an economic impact to the farmer because of the detrimental effects on reproductive performance, milk production, and survivability. The aim of this randomized clinical study was to investigate the effects of a prepartum immunization using a herd-specific multivalent vaccine on incidence of APM, prevalence of clinical endometritis (CE), and selected measures of reproductive performance in primiparous Holstein cows. Pregnant nulliparous cows (230±4days of gestation) assigned to the vaccinated group (VG; n=142) received subcutaneously 5...
July 22, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28757186/the-basic-reproduction-number-r0-of-measles-a-systematic-review
#12
REVIEW
Fiona M Guerra, Shelly Bolotin, Gillian Lim, Jane Heffernan, Shelley L Deeks, Ye Li, Natasha S Crowcroft
The basic reproduction number, R nought (R0), is defined as the average number of secondary cases of an infectious disease arising from a typical case in a totally susceptible population, and can be estimated in populations if pre-existing immunity can be accounted for in the calculation. R0 determines the herd immunity threshold and therefore the immunisation coverage required to achieve elimination of an infectious disease. As R0 increases, higher immunisation coverage is required to achieve herd immunity...
July 27, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28739557/facebook-recruitment-of-vaccine-hesitant-canadian-parents-cross-sectional-study
#13
Jordan Lee Tustin, Natasha Sarah Crowcroft, Dionne Gesink, Ian Johnson, Jennifer Keelan, Barbara Lachapelle
BACKGROUND: There is concern over the increase in the number of "vaccine-hesitant" parents, which contributes to under-vaccinated populations and reduced herd immunity. Traditional studies investigating parental immunization beliefs and practices have relied on random digit dialing (RDD); however, this method presents increasing limitations. Facebook is the most used social media platform in Canada and presents an opportunity to recruit vaccine-hesitant parents in a novel manner. OBJECTIVE: The study aimed to explore the use of Facebook as a tool to reach vaccine-hesitant parents, as compared with RDD methods...
July 24, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28739423/sociodemographic-and-economic-characteristics-of-susceptibility-to-rubella-among-women-preparing-for-pregnancy-in-rural-china
#14
Fangchao Liu, Shikun Zhang, Jue Liu, Qiaomei Wang, Haiping Shen, Yiping Zhang, Min Liu
OBJECTIVE: Infection with rubella virus during pregnancy can result in congenital defects and adverse pregnancy outcomes. The risk of rubella infection is greatly determined by level of rubella antibodies in serum. We conducted a survey on seronegativity rates of rubella antibodies in 0.78 million women who were planning to have a baby in rural China in order to evaluate the herd susceptibility in different age groups and Per Capita GDP regions. METHODS: In order to evaluate the herd susceptibility to rubella, we launched a nationwide population-based study of Chinese rural women who were planning to have a baby aged 21-49 years...
July 21, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28724972/asymptomatic-transmission-and-the-dynamics-of-zika-infection
#15
Seyed M Moghadas, Affan Shoukat, Aquino L Espindola, Rafael S Pereira, Fatima Abdirizak, Marek Laskowski, Cecile Viboud, Gerardo Chowell
Following the 2013-14 outbreak in French Polynesia, the Zika virus (ZIKV) epidemic spread widely to many countries where Aedes Aegypti as the main transmitting vector is endemic. The lack of a second wave of ZIKV infection in most affected regions may suggest that a sufficiently high level of herd immunity was reached during the first wave. We developed an agent-based transmission model to investigate the role of asymptomatic infection on the likelihood of observing a second wave, while accounting for its relative transmissibility...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28711373/comparative-genomic-and-phylogenetic-analysis-of-a-toxigenic-clinical-isolate-of-corynebacterium-diphtheriae-strain-b-d-16-78-from-malaysia
#16
Kar-Wai Hong, A W Asmah Hani, C A Nurul Aina Murni, R R Pusparani, Chee Kheong Chong, Khebir Verasahib, Wan Noraini W Yusoff, Noorliza M Noordin, Kok Keng Tee, Wai-Fong Yin, Choo Yee Yu, Geik Yong Ang, Kok-Gan Chan
In this study, we report the comparative genomics and phylogenetic analysis of Corynebacterium diphtheriae strain B-D-16-78 that was isolated from a clinical specimen in 2016. The complete genome of C. diphtheriae strain B-D-16-78 was sequenced using PacBio Single Molecule, Real-Time sequencing technology and consists of a 2,474,151-bp circular chromosome with an average GC content of 53.56%. The core genome of C. diphtheriae was also deduced from a total of 74 strains with complete or draft genome sequences and the core genome-based phylogenetic analysis revealed close genetic relationship among strains that shared the same MLST allelic profile...
July 12, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28697522/childhood-vaccination-against-seasonal-influenza-to-reduce-the-overall-burden-of-disease-ethical-perspectives
#17
Kyriakos Martakis, Kruthika Thangavelu, Peter Schröder-Bäck
Introduction Childhood immunisation against seasonal influenza promises to reduce the burden of disease through herd immunity. The option of intranasal vaccination seemed to offer a more acceptable vaccination for children, as they are perceived to be less invasive. Yet, intranasal vaccines have been recently proven not to be as effective as presumed. In Germany, contradictory recommendations of the Standing Committee on Vaccination (STIKO) first, to use and then, in October 2016, not use these vaccines have been issued for the 2016-2017 season, whereas recommendations not to use them were already issued in the USA (CDC, ACIP)...
July 11, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28692654/estimating-the-basic-reproduction-rate-of-hfmd-using-the-time-series-sir-model-in-guangdong-china
#18
Zhicheng Du, Wangjian Zhang, Dingmei Zhang, Shicheng Yu, Yuantao Hao
Hand, foot, and mouth disease (HFMD) has caused a substantial burden of disease in China, especially in Guangdong Province. Based on notifiable cases, we use the time series Susceptible-Infected-Recovered model to estimate the basic reproduction rate (R0) and the herd immunity threshold, understanding the transmission and persistence of HFMD more completely for efficient intervention in this province. The standardized difference between the reported and fitted time series of HFMD was 0.009 (<0.2). The median basic reproduction rate of total, enterovirus 71, and coxsackievirus 16 cases in Guangdong were 4...
2017: PloS One
https://www.readbyqxmd.com/read/28683954/impact-of-porcine-epidemic-diarrhea-on-herd-and-individual-berkshire-sow-productivity
#19
Aina Furutani, Tadahiro Kawabata, Masuo Sueyoshi, Yosuke Sasaki
Porcine epidemic diarrhea (PED) is an emerging disease of pigs in several countries. In the present study, individual sow productivity of Berkshire sows exposed to PED virus at different stages of production was compared. On a commercial farrow-to-finish farm in Kagoshima Prefecture, Japan, the clinical presence of PED was observed in the farrowing barn on January 6, 2014, and all gilts and sows were immunized on January 9, except those in the farrowing barn. The sows were categorized into six groups based on the period in which they were exposed to PED virus: between days 0-30 (G1), 31-60 (G2), 61-90 (G3), or after 91 days of pregnancy (G4), during lactation (L), and after weaning (W)...
June 26, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28672080/ki67-cd105-and-%C3%AE-sma-expression-better-relates-the-binary-oral-epithelial-dysplasia-grading-system-of-world-health-organization
#20
Amol Ramchandra Gadbail, Minal S Chaudhary, Sachin C Sarode, Madhuri Gawande, Sheetal Korde, Satyajit Ashok Tekade, Shailesh Gondivkar, Alka Hande, Rupesh Maladhari
BACKGROUND: The binary system of oral epithelial dysplasia (OED) has never been investigated with reference to the carcinogenesis related biomarkers. Hence, Ki67, CD105, and α-SMA immune-expression were studied in oral potentially malignant disorders (OPMDs) to assess their relationship with the binary OED grading system of World Health Organization. METHODS: The study was carried out on paraffin-embedded tissues of 30 normal oral mucosa (NOM) and 140 OPMD cases...
July 3, 2017: Journal of Oral Pathology & Medicine
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