PREVALENCE OF AVIAN PARAMYXOVIRUS 1 AND AVIAN INFLUENZA VIRUS IN DOUBLE-CRESTED CORMORANTS (<i>PHALACROCORAX AURITUS</i>) IN EASTERN NORTH AMERICA

Cross, Tiffanie A.; Arsnoe, Dustin M.; Minnis, Richard B.; King, D. Tommy; Swafford, Seth R.; Pedersen, Kerri; Owen, Jennifer C.

doi:10.7589/2012-06-164

Cited by 19 publications

(17 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…H5 subtype was, however, detected using molecular methods (RT-PCR) in cloacal lavages of P. carbo inhabiting the north-western area of the Caspian Sea (Iashkulov et al, 2008) but its prevalence was very low (below 5.0%). Because AIV in other cormorant species such as P. magellanicus, P. atriceps (Gallo et al, 2013) and P. harrisi (Travis et al, 2006) has not been identified, and only a very low prevalence of AIV was found in P. auritus for which AIV-specific antibodies and AIV matrix protein were positive only sporadically (Cross et al, 2013), it can be suggested that this group of birds is unlikely to be involved in the circulation of the virus. However, more extensive surveys on P. carbo, including populations from other parts of the world, are necessary before any definitive conclusions can be drawn.…”

Section: Role In Pathogen Dispersionmentioning

confidence: 99%

The complexity of ecological impacts induced by great cormorants

Klimaszyk

Rzymski

2015

Hydrobiologia

View full text Add to dashboard Cite

Following decades of global extermination, the general population of the great cormorant (Phalacrocorax carbo L.) is on the rise. The lack of regular predators, highly skilled fish rapacity, rapid metabolism, significant rate of excretion and ability to form large nesting colonies on relatively small areas lead to numerous environmental consequences of cormorant presence. Here we comprehensively review the occurrence and distribution of this species and, in particular, its multi-faceted impact on terrestrial and aquatic ecosystems and the main routes through which these impacts are being manifested. The bird-induced chemical loading and its biological and ecological consequences, and the effects on microbial pollution and pathogen dispersion are discussed in particular. The need for further investigation to fully elucidate particular effects is stressed throughout the paper. It is concluded that the environmental effects of great cormorants are rather complex, can lead to serious ecosystem modifications and that the presence of these birds should be taken into consideration in ecological assessment and monitoring.

show abstract

Section: Role In Pathogen Dispersionmentioning

confidence: 99%

The complexity of ecological impacts induced by great cormorants

Klimaszyk

Rzymski

2015

Hydrobiologia

View full text Add to dashboard Cite

show abstract

“…These viruses occur naturally among wild aquatic birds worldwide and can infect over 100 domestic sources of poultry as well as other birds and animal species [2,3,4,5,6,7]. Avian influenza viruses do not normally infect humans, but human infections may occur after contact with infected birds or their secretions or excretions, or through limited human-to-human transmission [8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Comparative Epidemiology of Human Fatal Infections with Novel, High (H5N6 and H5N1) and Low (H7N9 and H9N2) Pathogenicity Avian Influenza A Viruses

Zhang²,

Zhao

et al. 2017

IJERPH

View full text Add to dashboard Cite

This study aimed to assess the mortality risks for human infection with high (HPAI) and low (LPAI) pathogenicity avian influenza viruses. The HPAI case fatality rate (CFR) was far higher than the LPAI CFR [66.0% (293/444) vs. 68.75% (11/16) vs. 40.4% (265/656) vs. 0.0% (0/18) in the cases with H5N1, H5N6, H7N9, and H9N2 viruses, respectively; p < 0.001]. Similarly, the CFR of the index cases was greater than the secondary cases with H5N1 [100% (43/43) vs. 43.3% (42/97), p < 0.001]. Old age [22.5 vs. 17 years for H5N1, p = 0.018; 61 vs. 49 years for H7H9, p < 0.001], concurrent diseases [18.8% (15/80) vs. 8.33% (9/108) for H5N1, p = 0.046; 58.6% (156/266) vs. 34.8% (135/388) for H7H9, p < 0.001], delayed confirmation [13 vs. 6 days for H5N1, p < 0.001; 10 vs. 8 days for H7N9, p = 0.011] in the fatalities and survivors, were risk factors for deaths. With regard to the H5N1 clusters, exposure to poultry [67.4% (29/43) vs. 45.2% (19/42), p = 0.039] was the higher risk for the primary than the secondary deaths. In conclusion, old age, comorbidities, delayed confirmation, along with poultry exposure are the major risks contributing to fatal outcomes in human HPAI and LPAI infections.

show abstract

“…Here, geospatial data such as location of the infected host is used in the model to infer diffusion. While there have been many studies that have characterized influenza viruses in migratory birds in the United States (Bahl et al, 2013; Chen and Holmes, 2009; Cross et al, 2013; Dugan et al, 2008; Girard et al, 2012; Henaux et al, 2012; Hill et al, 2012b; Huang et al, 2014; Ip et al, 2008; Jackwood and Stallknecht, 2007; Koehler et al, 2008; Krauss et al, 2004; Lee et al, 2011; Lewis et al, 2013; Pearce et al, 2010; Ramey et al, 2011; Spackman et al, 2005; Suarez et al, 1999; Widjaja et al, 2004; Wille et al, 2011), none have focused on the Southwestern United States. Lam et al (2012) studied the migration of influenza viruses among a variety of migratory birds in the United States.…”

Section: Introductionmentioning

confidence: 99%

Diffusion of influenza viruses among migratory birds with a focus on the Southwest United States

Scotch

Lam

Pabilonia

et al. 2014

Infection, Genetics and Evolution

View full text Add to dashboard Cite

The Southwest United States, including Arizona and New Mexico, has a diverse climate and is home to many different avian species. We sequenced the hemagglutinin (HA) gene of twenty influenza specimens for the years 2007–2009. This included four from Arizona, and sixteen from New Mexico. We analyzed the sequences and determined the following HA subtypes: H3, H4, H6, H8, and H11. For each subtype, we combined our virus sequences with those from a public database, and inferred phylogeographic models of influenza diffusion. Statistical phylogeography indicated that overall evolutionary diffusion of avian influenza viruses is geographically structured (p < 0.05). In addition, we found that diffusion to the Southwest was often from nearby states including California. For H3, H4 and H6, the intra-flyway gene flow rates were significantly (p < 0.001) higher than those of inter-flyway. Such rate difference was also observed in H8 and H11, yet, without statistical significance (p=0.132, p=0.190 respectively). Excluding any one flyway from the calculation generated similar results, suggesting that such barrier effect on gene flow rates is not exclusively produced by any single flyway. We also calculated the Bayes factor test for the significant non-zero rates between states and identified significant routes both within and across flyways. Such inter-flyway spread of influenza was probably the result of birds from four flyways co-mingling on breeding grounds in northern regions or marshaling on staging areas post breeding in Canada or Alaska, before moving south each fall. This study provides an initial analysis of evolutionary diffusion of avian influenza virus to and from the Southwest United States. However, more sequences from this region need to be generated to determine the role of host migration and other factors on influenza diffusion.

show abstract

PREVALENCE OF AVIAN PARAMYXOVIRUS 1 AND AVIAN INFLUENZA VIRUS IN DOUBLE-CRESTED CORMORANTS (PHALACROCORAX AURITUS) IN EASTERN NORTH AMERICA

Cited by 19 publications

References 36 publications

The complexity of ecological impacts induced by great cormorants

The complexity of ecological impacts induced by great cormorants

Comparative Epidemiology of Human Fatal Infections with Novel, High (H5N6 and H5N1) and Low (H7N9 and H9N2) Pathogenicity Avian Influenza A Viruses

Diffusion of influenza viruses among migratory birds with a focus on the Southwest United States

Contact Info

Product

Resources

About