Evidence of subclinical foot-and-mouth disease (FMD) virus infection in young calves born from FMD clinically recovered cow under natural condition
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Title |
Evidence of subclinical foot-and-mouth disease (FMD) virus infection in young calves born from FMD clinically recovered cow under natural condition
Not Available |
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Creator |
Ranjan R
Biswal J K Subramanium S Dash B B Singh K P Arzt J Rodriguez L L Pattnaik B |
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Subject |
subclinical infection, foot-and-mouth disease virus, Non-structural protein, Carrier status, Oesophageal-pharyngeal fluid
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Description |
Not Available
Foot-and-mouth disease (FMD) is a highly contagious and economically important, transboundary viral disease of cloven-hoofed animals. It is known that an asymptomatic, persistent FMD virus (FMDV) infection may occur subsequent to acute or subclinical FMDV infection in adult ruminants. However, virus persistence in young calves has not been studied. In the current investigation, FMDV infection parameters were examined for calves born to FMD-clinically recovered cows (CRC), asymptomatic cows from infected herds (ASC) and cows from with no history of FMD (NHF). The study was conducted in natural condition after FMD outbreaks in two dairy herds in India. No calves described herein had any clinical signs of FMD. Six out of 12 calves born to CRC had detectable FMDV RNA in oesophageal-pharyngeal fluid consistent with asymptomatic FMDV infection. Three of the 12 calves of CRC group had seroreactivity against FMDV non-structural proteins. One calf had detectable FMDV RNA at two consecutive samplings at 2 months apart. However, infectious FMDV was not isolated from any calf in the study. None of the calves in the ASC or NHF groups had any evidence of FMDV infection. Overall, these data are consistent with earlier report on calves having been infected in utero. Further investigation of FMDV persistence in calves under controlled conditions may lead to greater understanding of the viral pathogenesis. Not Available |
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Date |
2019-11-19T05:03:59Z
2019-11-19T05:03:59Z 2018-06-18 |
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Type |
Research Paper
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Identifier |
Ranjan, R., Biswal, J.K., Subramaniam, S. et al. Trop Anim Health Prod (2018) 50: 1167. https://doi.org/10.1007/s11250-018-1518-6
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/24868 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Springer
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