scholarly journals Occurrence and molecular detection of avian coronavirus in selected live bird markets, northwestern, Nigeria

2021 ◽  
Vol 18 (4) ◽  
pp. 226-229
Author(s):  
I . Bitrus ◽  
I. Shittu ◽  
C.A. Meseko ◽  
T.M. Joannis

Infectious bronchitis (IB) is one of the most common highly infectious viral respiratory diseases of poultry having wide geographical  distribution. Yet, little is known about the infection in the northwestern states of Nigeria. In this study, a total of 263 pooled cloacal and tracheal swab samples were collected from apparently healthy avian species (duck, dove, geese, guinea fowl, local chicken, ostrich, parrot, pigeon, peacock, and turkey). The samples were from nine live bird markets in three states (Kaduna, Kano and Jigawa) of northwestern,  Nigeria collected from September through November 2017. Total RNAs were extracted directly from the swab samples and screened for infectious bronchitis virus (IBV) using real-time reverse transcription-polymerase chain reaction. An overall prevalence of 38.0% (100/263)was recorded. IB was detected in 70 % (7/10) of the avian species with prevalence of 100 % in dove, local chicken 45.9 %, duck 42.3 %, geese 26.6 %, pigeon 23.5 %, turkey 20.0 % and guinea fowl 6.2 %. Conversely, no detection was made from ostrich, parrot, and peacock.  Widespread distribution of IBV was observed and evidence of subclinical infection in seven out of ten (70 %) of the avian species sampled. These avian species harbouring IBV may act as reservoirs with an influence on the ecology and epidemiology of the disease. Continuous surveillance and characterization of the different serotypes in avian species are recommended to inform the adoption of suitable  vaccination strategy and control measures for the disease in Nigeria. Keywords: Infectious bronchitis virus, Live bird markets (LBMs), Molecular detection, Nigeria, Poultry

2016 ◽  
Vol 4 (7) ◽  
pp. 370-375 ◽  
Author(s):  
Md. Inkeyas Uddin ◽  
Md. Shafiqul Islam ◽  
Tofazzal Md. Rakib ◽  
Shubhagata Das ◽  
Paritosh Kumar Biswas ◽  
...  

2011 ◽  
Vol 40 (3) ◽  
pp. 223-235 ◽  
Author(s):  
J. J. (Sjaak) de Wit ◽  
Jane K. A. Cook ◽  
Harold M. J. F. van der Heijden

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1876
Author(s):  
Salleh Annas ◽  
Mohd Zamri-Saad

The world is currently facing an ongoing coronavirus disease 2019 (COVID-19) pandemic. The disease is a highly contagious respiratory disease which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Current control measures used by many countries include social distancing, wearing face masks, frequent hand washing, self-isolation, and vaccination. The current commercially available vaccines are injectable vaccines, although a few intranasal vaccines are in trial stages. The reported side effects of COVID-19 vaccines, perceptions towards the safety of the vaccines, and frequent mutation of the virus may lead to poor herd immunity. In veterinary medicine, attaining herd immunity is one of the main considerations in disease control, and herd immunity depends on the use of efficacious vaccines and the vaccination coverage in a population. Hence, many aerosol or intranasal vaccines have been developed to control veterinary respiratory diseases such as Newcastle disease, rinderpest, infectious bronchitis, and haemorrhagic septicaemia. Different vaccine technologies could be employed to improve vaccination coverage, including the usage of an intranasal live recombinant vaccine or live mutant vaccine. This paper discusses the potential use of intranasal vaccination strategies against human COVID-19, based on a veterinary intranasal vaccine strategy.


Author(s):  
K.T. Shyma ◽  
Surya Sankar ◽  
T.V. Aravindakshan ◽  
K. Krithiga ◽  
Anu Bosewell ◽  
...  

2021 ◽  
Vol 18 (4) ◽  
pp. 221-225
Author(s):  
S. Ijoma ◽  
I. Shittu ◽  
C. Chinyere ◽  
K.A. Olawuyi ◽  
D.A. Gado ◽  
...  

Globally, infectious bronchitis (IB) is an important respiratory viral disease responsible for enormous economic losses to poultry farmers.  In Nigeria, limited reports on the prevalence and serotypes of the IB virus are available. Here, we investigated the prevalence and serotypes of infectious bronchitis virus (IBV) in chicken in Plateau State. A descriptive cross-sectional study was carried out involving 440 apparently healthy free-range local chickens sampled from eleven villages in four Local Government Areas (LGA) of Plateau State. Sera collected from the birds were screened for the presence of four IBV serotypes namely; Massachusetts (Mass), Arkansas (Ark), Connecticut (Con) and Delaware (De-072) using haemagglutinationinhibition (HI) test. In all, a prevalence of 82.95% (n = 365) was recorded. At LGAlevel, prevalence of 79.50%, 47.37%, 95.45% and 100% were recorded in Kanam, Mangu, Qua’an pan and Bassa LGAs, respectively. Based on serotype prevalence, Mass had 89.30% (n = 326); Ark 79.70% (n = 291); Con 88.20% (n = 322) while De-072 was 42.70% (n = 156). There were statistically significant associations between dominant serotype and the LGAs (p≤0.001). This study shows high prevalence of IBwith at least four strains of IBV present in free-range chicken flocks in Plateau State requiring attention for control measures. Keywords: Free-range chicken; Infectious bronchitis virus; Plateau state, Serosurvey, Serotype


10.1637/7220 ◽  
2005 ◽  
Vol 49 (1) ◽  
pp. 24-29 ◽  
Author(s):  
Hugo Moscoso ◽  
Erine O. Raybon ◽  
Stephan G. Thayer ◽  
Charles L. Hofacre

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