Articles
308 open-access articles · page 11 of 16
ArticlesFormulation and evaluation of inactivated lumpy skin disease virus vaccine using ISA 50 and ISA 206 adjuvants.
Youssef A. Elgharbawy, Mervat M. Ali, Ayman H. El-Deeb, Mohamed A. Shalaby
Lumpy skin disease (LSD) is one of the most serious livestock diseases in Egypt since 1988 when the disease spread widely all over the country. since that attenuated sheep pox virus (SPV) used for vaccination cattle flocks against LSD due to immunological rela…
20 Aug 2021- Articles
Cytokines profile and antibody response of calves vaccinated with conventional inactivated Trivalent FMD vaccine
Abdelaziz A. Yassin, Ayman H. El Deeb, Abeer E. Mansour, Hussein A. Hussein
In the present study, eight (sero-negative for FMDV) native breed calves (6-12 months of age) were used to study the cytokine profile including IL-2, IL-4, IFN-γ and antibody response of calves vaccinated with conventional inactivated trivalent FMD vacci…
20 Aug 2021 - Articles
Molecular Characterization of Alfalfa Mosaic Virus and Its Effect on Basil (Ocimum basilicum) Tissues in Egypt
Ahmed K. El-Attar, Samah A. Mokbel, Om-Hashem M. EL-Banna
Background: Various isolates of Alfalfa Mosaic Virus (AMV) found throughout the world affect a wide variety of aromatic and medical plants. In March 2016, several symptoms of leaf necrosis, bright yellow mosaic and malformation of leaves suggested viral infect…
20 Aug 2021 - Articles
Experimental efficacy evaluation of inactivated and live Newcastle disease virus vaccines of genotypes II and VII against wild type virus
Karim M. Selim, Abdullah A. Selim, abdelsattar Arafa, Hussein A. Hussein, Ahmed A. El-Sanousi
Background: Different genotypes of Avian avulavirus 1, also known as Newcastle disease virus (NDV) and formerly known as Avian paramyxovirus 1(APMV-1), are circulating in many parts of the world. Currently, the used vaccine strains (mainly genotypes I and II)…
20 Aug 2021 - Articles
Sensitivity of Real Time –PCR in comparison with conventional methods for detection of AI virus
Lamiaa M. Omar, Mohamed A. Abdrabo, Dali M. Omar, Nermeen A. Marden
Background: Avian influenza virus (AIV) infection, an important but difficult pathogen to control in poultry. Vaccination might reduce the risk of bird infection virus transmission by reducing virus shedding. Challenge of vaccinated birds with AI vaccines unde…
18 Aug 2021 - Articles
A genotyping of a new avian infectious bronchitis virus isolated from chickens proventriculus in Egypt
Ehab M. El-Nahas, Hemat S. El-Sayed, Sawsan S. El-Basuni, Gabr F. El-Bagoury
Background: A novel avian infectious bronchitis virus (IBV), Egypt/Qal/014p was isolated from 14-day-old broiler chickens with proventriculitis in Qaluobia province of Egypt in 2014. Objective: The isolate was identified by a real time RT-PCR targeting the nuc…
18 Aug 2021 - Articles
Isolation, pathotyping and genotyping of Newcastle disease virus from broiler chickens in Egypt
Ayman S. El-Habbaa, Gabr F. El-Bagoury, Samar F. El-Adaway, Susan S. El-Mahdy
Background: In Egypt, outbreaks of Newcastle disease (ND) have been occurring in vaccinated chickens with great economic losses. Objective: This work aimed for diagnosis and characterization of Newcastle Disease Virus (NDV) from infected broiler chickens in Eg…
18 Aug 2021 - Articles
Comparative Studies on Evaluation of Different Avian Influenza Inactivated Vaccines under Local Conditions in Egypt
Nermeen A. Marden, Lamiaa M. Gaafar, Hussein A. Hussein
Background: Vaccination strategies have an important role in the limitation of viral infection and spread to the surrounding environment. The evaluation methods of the AI vaccines are very important for controlling the license of the bad vaccines. Comparative…
18 Aug 2021 - Articles
The co- infection of cucurbits with criniviruses and ipomoviruses: possible adverse effect on virus diagnosis and breeding for resistance
Aly M. Abdel-Salam
Backgrouns: Recently whitefly-transmitted viruses (WTV) have emerged as a major economic threat to the cucurbit industry in the Middle East and countries in the Mediterranean basin. Whitefly-transmitted viruses to cucurbits include viruses in the Begomovirus,…
18 Aug 2021 - Articles
Evaluation of vaccination with local and imported vaccine against foot and mouth disease virus in Kalubeya governorate
Lamya A. F. Ateya, Said. A .Ahmed, Khamees K.S. Ashraf, Heba A. Abdel-Hady
Background: FMD virus poses a serious threat to the inter-national animal trade. The preventive vaccinations followed by sero-survey have been implemented for the control of FMD. Objectives: 3ABC ELISA is highly effective for early identification of infected a…
18 Aug 2021 - Articles
PHYLOGENETIC ANALYSIS AND PATHOGENECITY ASSESSMENT OF LOCALLY ISOLATED STRAIN OF HPAI VIRUS IN EGYPT IN 2016
Dalia M. Omar, Nermeen A. Marden, Lamiaa M. Gaafar, Elham A. El-ebiary, Khalid El-Dougdoug, Badawi Othman et al.
Background: Avian influenza viruses (AIV) circulating in Egypt since 2006 causing serious economic losses in poultry sector and human hazard although vaccination programs applied and other control measures. Objectives: The present study was designed for detect…
18 Aug 2021 - Articles
Molecular, clinico-pathological and sero-diagnosis of LSDV in cattle at Sharkia and Fayoum Governorates
Nashwa M. Helmy, Ahmed S. Ahmed, Zeinab3 Y. Mohamed
Background: A total of 30 biopsy samples from cutaneous nodules were obtained from infected animals at different stages during the course of the Lumpy skin disease (LSD), and (100) Peripheral blood samples without anticoagulant were drawn from apparently healt…
18 Aug 2021 - Articles
Isolation and Detection of Avian Reovirus from Tenosynovitis and Malabsorption Affected Broiler Chickens with Involvement of Vertical Transmission
Shimaa M. Mansour, Reham M. ElBakrey, Ahmed Orabi, Haytham Ali, Amal A. Eid
Background: Avian Reovirus (ARV) is involved in many pathologic syndromes of chicken including the both major syndromes, Viral Arthritis (VA) and Runting Stunting Syndrome (RSS), which have great negative impacts on the poultry industry. Although ARV was repor…
18 Aug 2021 - Articles
Seroprevelance of Avian Metapneumovirus in Egyptian Chicken and Duck Flocks with a Reference on Economic Impact
Abdou Nagy, Fatma Abdallah, Kareem Sweed, Ahmed Salama, Mohamed Omar
Background: Avian metapneumovirus (aMPV) is one of common respiratory pathogens affects poultry and can cause economic losses, particularly when accompanied with secondary pathogens. Aim: This study aimed to perform seroprevalence of aMPV for non-vaccinated ch…
18 Aug 2021 - Articles
Biological and Molecular Characterizations for Identification of a Phytoplasma Associated With Lemon Witches’-Broom in Egypt
Rasha M. Mahrous, Ahmed K. El-Attar, Ahlam A. AlWatban, Sohair I. EL-Afifi, Nagwa M. Aref
Background: Phytoplasma Associated with Witches' broom disease (WB) is a very serious disease of citrus with a major limiting factor for lime production. Symptoms of Witches' broom were observed on limes in AL-Qalyubia governorate, Egypt. This study identified…
18 Aug 2021 - Articles
Genetic characterization of rabbit hemorrhagic disease virus from naturallyinfected rabbits in Sharkia governorate, Egypt
Naglaa F.S. Awad, Gamelat K.F. Kotb
Background: Since the first introduction of rabbit hemorrhagic disease virus (RHDV) in 1991, Egyptian authorities started a national vaccination program against the disease. However, RHDV clinical cases are still being reported. Objectives: This study aimed to…
18 Aug 2021 - Articles
Standardization of Quality Control Protocol for Evaluation of Recombinant HVT-H5 Vaccine
Ola Youssef, EL-Deeb A.H.2 Nassif S.A, Ahmed A. El-Sanousi 2
Background: There is no international quality control protocol for evaluation of recombinant H5 vaccines had been established yet so, these vaccines are evaluated by applying the conventional QC tests such as identity, safety, purity, potency and efficacy that…
18 Aug 2021 - Articles
Circulation of FMD serotypes SAT2 (VII-Ghb-12), O (EA-3) and A (G-IV) in cattle population in Egypt, 2018
Dina A. Abdulrahman, Ayman H. EL-Deeb, Momtaz A. Shaheen, Hussein A. Hussein
Background: Foot and mouth disease virus (FMDV) is the causative agent of multiple outbreaks and severe economic losses in the cattle population since its introduction in Egypt. Although vaccination is practiced to control the disease, it is still endemic. Mor…
18 Aug 2021 - Articles
Incidence, serologic and molecular characterization of Potato virus S from commercial potato in Egypt
Salama M. El-Saghir
Background: In Egypt potato crop is affected heavily by a wide variety of viruses, viz. PVY, PLRV, and PVX. Potato virus S (PVS), family Betaflexiviridae; genus Carlavirus) is one of the most common potato (Solanum tuberosum L.) viruses found infecting potato…
18 Aug 2021 - Articles
Antigenic content of 500 HA units in H5N1 reassortant AI vaccine enhances protection and reduces shedding of HPAI H5N1 clade 2.2.1.2 in broiler chickens
Hussein A. Hussein, Maha Khedr, Reem A. Suliman, Marwa F. Mohamed, Mounir D. El Safty
Background: Egyptian poultry industry has suffered from high economic losses as a result of the wide spread of highly pathogenic H5N1. Determination of the optimal antigen content of avian influenza virus vaccines is urgent to reach protective antibody titers…
18 Aug 2021