Publications by authors named "Sham Soun Nahar"
Objective: Infectious bronchitis (IB), a highly infectious acute viral disease, is a major burden to the chicken industry worldwide. The research aimed to develop an inactivated IB vaccine using local isolates and assess its immunogenicity compared to other commercial live IB vaccines.
Materials And Methods: An inactivated vaccine using a candidate IB virus (PP067159.
Article Synopsis
- Newcastle disease virus (NDV) genotype VII poses significant threats to poultry, leading to severe health issues and high mortality rates, prompting research into a locally developed inactivated vaccine.
- The inactivated ND vaccine was compared with commercial live vaccines in a study assessing different vaccination methods and doses, showing that subcutaneous administration of 1.0 ml resulted in the highest antibody levels and efficacy.
- Findings indicated that the killed-followed-killed vaccination regimen offered the best protection (100%) and sustained immunity, suggesting its effectiveness in managing ND outbreaks in poultry in Bangladesh.
Objective: Infectious laryngotracheitis virus (ILTV) is responsible for causing infectious laryngotracheitis (ILT), which is a rapidly spreading and extremely transmissible disease in chickens. The current research aims to isolate and characterize ILTV from layer chickens in Bangladesh.
Materials And Methods: A total of 345 samples (trachea, larynx, and lungs) were collected from ILT-suspected dead and sick layer chickens of 32 ILT-suspected farms in three different outbreak districts (Gazipur, Tangail, and Mymensingh) of Bangladesh during the outbreak year 2021-2022.
Objective: Newcastle disease virus genotype VII (NDV-GVII), an extremely infectious pathogen, has been causing severe economic consequences for the chicken industry. The current study aimed to isolate and characterize NDV-GVII from commercial chickens in Bangladesh during a recent outbreak.
Materials And Methods: From clinically suspected chickens from 70 commercial poultry farms, a total of 420 samples (trachea, lungs, and brain tissue) were collected.
Article Synopsis
- Avian infectious bronchitis (AIB) is a contagious disease impacting poultry worldwide, prompting a study in Bangladesh to isolate and identify new strains from sick layer chickens.
- Researchers collected 108 samples from 18 farms, utilizing various techniques including hemagglutination tests and RT-PCR to confirm the presence of the infectious bronchitis virus (IBV).
- Findings revealed that 8 samples tested positive for IBV, with recent isolates belonging to the highly pathogenic genotype-QX, similar to strains found in other countries like Thailand and Saudi Arabia.