Pigeons are resistant to experimental infection with H7N9 avian influenza virus.

Pigeons are resistant to experimental infection with H7N9 avian influenza virus. Avian Pathol. 2015 Oct;44(5):342-6 Authors: Liu Y, Yang Z, Wang X, Chen J, Yao J, Song Y, Lin J, Han C, Duan H, Zhao J, Pan J, Xie J Abstract To determine the susceptibility of pigeons to the newly emerged avian influenza virus subtype H7N9, we experimentally infected three different types of pigeons (meat, town, and racing) with two different doses (2 × 10(4) or 2 × 10(5) EID50) of H7N9 avian influenza virus A/Chicken/China/2013 by either intranasal and intraocular inoculation (IN + IO) or intravenous injection (IV). In addition, the potential transmission of H7N9 to pigeons by direct close contact with experimentally infected pigeons and chickens was assessed. Results showed that none of the experimentally infected pigeons exhibited any clinical signs regardless of the infection route and dose. Of the 12 racing pigeons that were randomly selected and necropsied, none of them had any gross lesions. In agreement with this finding, virus was not isolated from all pigeons. No detectable H7-specific antibodies were found in any pigeon. In contrast, 11 of 31 chickens that were either directly infected with H7N9 by IN + IO inoculation or by contact with IN + IO-infected chickens had conjunctivitis. Virus was isolated from all 31 chickens and H7-specific antibodies were detected in these chickens. Ho...
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research

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Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Linton Koray Ergünay We obtained a Jingmen tick virus (JMTV) isolate, following inoculation of a tick pool with detectable Crimean-Congo hemorrhagic fever virus (CCHFV) RNA. We subsequently screened 7223 ticks, representing 15 species in five genera, collected from various regions in Anatolia and eastern Thrace, Turkey. Moreover, we tested specimens from various patient cohorts (n = 103), and canine (n = 60), bovine (n = 20) and avian specimens (n = 65). JMTV nucleic acids were detected in 3.9% of the tick pools, including those from several tick species from the genera Rhipicephalus and Haemaphysalis, and Hyalo...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Publication date: February 2020Source: Phytochemistry Letters, Volume 35Author(s): Yu-Qing He, Liang Cai, Qun-Gang Qian, Sheng-Hui Yang, Di-Lu Chen, Bi-Qing Zhao, Zhen-Ping Zhong, Xiao-Jiang ZhouAbstractTwo new sesquiterpenes, named carpabrotalactone A (1) and B (2), together with six known sesquiterpenes, 11(13)-dehydroivaxillin (3), eriolin (4), 2α,5α-dihydroxy-11αH-eudesma-4(15)-en-12,8β-olide (5), (5α)-5-hydroxyasperilin (6), 1α,4α-dihydroxy-guaia-11(13)-ene-12,8α-olide (7) and 4α,5α-dihydroxy-guaia-11(13)-en-12,8α-lactone (8), were isolated from the herb...
Source: Phytochemistry Letters - Category: Chemistry Source Type: research
(CNN) — The US Centers for Disease Control and Prevention told doctors on a conference call this week that the United States is seeing more flu than is typical for this time of year. “Influenza is off to an early start,” said Dr. William Schaffner, an infectious disease expert at Vanderbilt University who was on the CDC call, which included members of the Influenza Hospitalization Surveillance Network, a group of hospitals that help the CDC assess the severity of the flu season. Thirty states are seeing flu activity — for this time of year, that’s the most states in a decade. Three s...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Boston News Health Seen On WBZ-TV Syndicated CBSN Boston flu season Source Type: news
Source: Chemistry of Natural Compounds - Category: Chemistry Source Type: research
Condition:   Influenza Intervention:   Drug: Flumist Quadrivalent Nasal Product Sponsor:   University of Alabama at Birmingham Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
In conclusion, the reported results highlight the importance of AIV attachment to trachea in many avian species. Finally, the importance of chickens and mallards in AIVs dynamics was illustrated by the abundant AIV attachment observed. Introduction Influenza A viruses (IAVs) are pathogens of global concern in both human and veterinary medicine (Webster et al., 1992; Stöhr, 2002; Olsen et al., 2006; Wiethoelter et al., 2015). Wild birds are well-described hosts of avian influenza viruses (AIVs) and longitudinal surveillance studies have demonstrated a plethora of low pathogenic AIVs (LPAIVs) circulating in wild...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
AVIAN flu, also known as bird flu is a virus can affect humans - causing symptoms ranging from mild conjunctivitis to to severe pneumonia and even death.
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
Since 1997, the H5, H7, and H9 subtypes of avian influenza virus (AIV) have caused outbreaks in poultry and humans around the world and gained significant attention [1,2]. However, the information concerning the molecular characteristics of other subtypes AIVs, such as the H10 subtype, has been limited. However, details about the molecular characteristics of other AIV subtypes, such as the H10, are limited. Since 2004, the H10N7 AIV has caused sporadic human infections with clinical symptoms such as conjunctivitis and a mild respiratory syndrome in Egypt and Australia [3].
Source: Journal of Clinical Virology - Category: Virology Authors: Tags: Short communication Source Type: research
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