Infectious bursal disease virus in free‐living wild birds: A systematic review and meta‐analysis of its sero‐viroprevalence on a global scale

Graziosi, Giulia; Catelli, Elena; Fanelli, Angela; Lupini, Caterina

doi:10.1111/tbed.14433

Cited by 13 publications

(10 citation statements)

References 101 publications

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“…In aquatic environments, intermediate avian hosts belonging to different feeding groups (herbivores, omnivores, carnivores, and insectivores) appear to be subjected to a similar infection probability [ 12 ]. In birds, several aquatic species are known hosts of relevant animal or zoonotic pathogens [ 13 , 14 , 15 , 16 , 17 ], including T. gondii [ 18 , 19 ]. Considering the ecology of waterfowl and the specialization as filter-feeders of some species, T. gondii infection in these animals suggests the presence of an oocysts-contaminated aquatic habitat.…”

Section: Introductionmentioning

confidence: 99%

Migratory Wild Birds as Potential Long-Distance Transmitters of Toxoplasma gondii Infection

et al. 2023

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Toxoplasma gondii is a worldwide distributed zoonotic protozoan capable of infecting a wide range of mammals (including humans) and birds as intermediate hosts. Migratory wild birds, through interconnecting countries along their flyways, can play a role in the spatial spread of T. gondii and could contribute to its sylvatic cycle. Additionally, hunted wild birds used for meat consumption could represent a further source of human infection. To determine the presence of T. gondii in wild birds, a total of 50 individuals belonging to the Anseriformes and Charadriiformes orders were sampled during the 2021–2022 hunting season in Northern Italy. Cardiac muscle samples of three Northern shovelers (Anas clypeata), two wild mallards (A. platyrhynchos), one Eurasian teal (A. crecca), and one Northern lapwing (Vanellus vanellus) were positive for the molecular detection of T. gondii based on a targeted amplification of the B1 gene. A 14% (7/50) overall positivity was observed in the sampled population. Results from this study suggest a moderate exposure of wild aquatic birds to T. gondii, highlighting the importance of a further characterization of T. gondii in its wildlife hosts.

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Section: Introductionmentioning

confidence: 99%

Migratory Wild Birds as Potential Long-Distance Transmitters of Toxoplasma gondii Infection

et al. 2023

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“…Similar results were previously obtained by Fan et al [ 51 ], and Lian et al [ 52 ] using novel variant strains, Hb06v and SHG19, respectively. The entry of this nVarIBDV (genotype A2d) into Egypt is difficult to explain, but China has become the epicenter of nVarIBDV spreading to other parts of the world, with a strong correlation between virus transmission patterns and the flow of commercial trade in live poultry and products [ 53 ] or migratory birds that could be carriers or spreaders of IBDV [ 54 ]. Further studies should be undertaken to provide important insights into the origin, evolution and transmission of nVarIBDV in order to assist in the development of control strategies.…”

Section: Discussionmentioning

confidence: 99%

Isolation, Molecular, and Histopathological Patterns of a Novel Variant of Infectious Bursal Disease Virus in Chicken Flocks in Egypt

Salaheldin,

Abd El-Hamid,

Ellakany

et al. 2024

Veterinary Sciences

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After an extended period of detecting classical virulent, attenuated, and very virulent IBDV, a novel variant (nVarIBDV) was confirmed in Egypt in this study in 18, IBD vaccinated, chicken flocks aged 19–49 days. Partial sequence of viral protein 2 (VP2) [219 aa, 147–366, resembling 657 bp] of two obtained isolates (nos. 3 and 4) revealed nVarIBDV (genotype A2d) and OR682618 and OR682619 GenBank accession numbers were obtained. Phylogenetic analysis revealed that both nVarIBDV isolates were closely related to nVarIBDV strains (A2d) circulating in China, exhibiting 100% identity to SD-2020 and 99.5–98.1% similarity to ZD-2018-1, QZ, GX and SG19 strains, respectively. Similarity to USA variant strains, belonging to genotypes A2b (9109), A2c (GLS) and A2a (variant E), respectively, was 95.5–92.6%. Also, the VP2 hypervariable region in those two, A2d, isolates revealed greater similarities to Faragher 52/70 (Vaxxitek®) at 90.4% and to an Indian strain (Ventri-Plus®) and V217 (Xtreme®) at 89.7% and 86–88.9% in other vaccines. Histopathological examination of both the bursa of Fabricius and spleen collected from diseased chickens in flock no. 18 revealed severe atrophy. In conclusion, further studies are required to investigate the epidemiological situation of this novel genotype across the country, and to assess various vaccine protections against nVarIBDV. Additionally, vaccination of breeders with inactivated IBD vaccines including this nVarIBDV is essential to obtain specific maternal antibodies in their broilers.

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“…Infectious bronchitis virus (IBV) [ 3 , 4 , 5 ], Newcastle disease virus (NDV) [ 3 , 6 , 7 ], and avian influenza virus (AIV) [ 6 , 7 ] are common avian viruses circulating in migratory birds. In addition, a previous study showed moderate exposure of wild birds to infectious bursal disease virus (IBDV) [ 8 ]. The highly pathogenic avian influenza (HPAI) virus of the H5Nx subtype has been circulating in wild migrating birds over the last two decades and has become endemic in domestic poultry in several countries [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Emergence of Highly Pathogenic Avian Influenza A Virus (H5N1) of Clade 2.3.4.4b in Egypt, 2021–2022

Mosaad¹,

El-Husseiny²,

Zanaty³

et al. 2023

Pathogens

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Wild migratory birds have the capability to spread avian influenza virus (AIV) over long distances as well as transmit the virus to domestic birds. In this study, swab and tissue samples were obtained from 190 migratory birds during close surveillance in Egypt in response to the recent outbreaks of the highly pathogenic avian influenza (HPAI) H5N1 virus. The collected samples were tested for a variety of AIV subtypes (H5N1, H9N2, H5N8, and H6N2) as well as other pathogens such as NDV, IBV, ILT, IBDV, and WNV. Among all of the tested samples, the HPAI H5N1 virus was found in six samples; the other samples were found to be negative for all of the tested pathogens. The Egyptian HPAI H5N1 strains shared genetic traits with the HPAI H5N1 strains that are currently being reported in Europe, North America, Asia, and Africa in 2021–2022. Whole genome sequencing revealed markers associated with mammalian adaption and virulence traits among different gene segments, similar to those found in HPAI H5N1 strains detected in Europe and Africa. The detection of the HPAI H5N1 strain of clade 2.3.4.4b in wild birds in Egypt underlines the risk of the introduction of this strain into the local poultry population. Hence, there is reason to be vigilant and continue epidemiological and molecular monitoring of the AIV in close proximity to the domestic–wild bird interface.

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Infectious bursal disease virus in free‐living wild birds: A systematic review and meta‐analysis of its sero‐viroprevalence on a global scale

Cited by 13 publications

References 101 publications

Migratory Wild Birds as Potential Long-Distance Transmitters of Toxoplasma gondii Infection

Migratory Wild Birds as Potential Long-Distance Transmitters of Toxoplasma gondii Infection

Isolation, Molecular, and Histopathological Patterns of a Novel Variant of Infectious Bursal Disease Virus in Chicken Flocks in Egypt

Emergence of Highly Pathogenic Avian Influenza A Virus (H5N1) of Clade 2.3.4.4b in Egypt, 2021–2022

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