Highly Pathogenic Avian Influenza A(H7N3) Virus in Poultry, United States, 2020.

Highly Pathogenic Avian Influenza A(H7N3) Virus in Poultry, United States, 2020. Emerg Infect Dis. 2020 Oct 08;26(12): Authors: Youk S, Lee DH, Killian ML, Pantin-Jackwood MJ, Swayne DE, Torchetti MK Abstract An outbreak of low-pathogenicity avian influenza A(H7N3) virus of North American wild bird lineage occurred on commercial turkey farms in North Carolina and South Carolina, USA, during March-April 2020. The virus mutated to the highly pathogenic form in 1 house on 1 farm via recombination with host 28S rRNA. PMID: 33030423 [PubMed - as supplied by publisher]
Source: Emerging Infectious Diseases - Category: Infectious Diseases Authors: Tags: Emerg Infect Dis Source Type: research

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Abstract In January 2020, the subclade 2.3.4.4h of highly pathogenic avian influenza (H5N6) virus infected migratory whooper swans and mute swans in Xinjiang, western China. The virus is lethal to chickens and ducks but has low pathogenicity in mice. Antigenically, this subclade is similar to the H5N1 vaccine seed virus Re-11. PMID: 33030424 [PubMed - as supplied by publisher]
Source: Emerging Infectious Diseases - Category: Infectious Diseases Authors: Tags: Emerg Infect Dis Source Type: research
This study provides further insight into the ways that lymphocytes maturate and traffic in response to H7N9 infection in the ferret model.
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Background: On January 9th, 2017 a community health worker notified of increased number of deaths in backyard poultry in a pig rearing village of Rajshahi district, Bangladesh. We investigated the reported morbidity and mortality among backyard poultry in Rajshahi to confirm there was an ongoing outbreak of avian influenza, determine the etiology, and identify possible associated illnesses in humans and pigs.
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: 0542 Source Type: research
Y. Li et al.
Source: Emerging Infectious Diseases Journal - Category: Infectious Diseases Source Type: research
Publication date: Available online 28 August 2020Source: Preventive Veterinary MedicineAuthor(s): Claire Hautefeuille, Billal Azzouguen, Simon Mouchel, Gwenaëlle Dauphin, Marisa Peyre
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
(Penn State) Small-scale poultry farmers in Vietnam tend to respond to viral outbreaks of highly pathogenic avian influenza (HPAI) by rapidly selling their birds as a way to avoid financial loss, according to a new study by an international team of researchers. As these birds are commingled with other birds in markets and trading networks, this practice may increase the likelihood of widespread disease transmission.
Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news
Over the past few years, Professor Zhang Yongzhen has made it his business to sequence thousands of previously unknown viruses. But he knew straight away that this one was particularly nasty. It was about 1:30 p.m. on Jan. 3 that a metal box arrived at the drab, beige buildings that house the Shanghai Public Health Clinical Center. Inside was a test tube packed in dry ice that contained swabs from a patient suffering from a peculiar pneumonia sweeping China’s central city of Wuhan. But little did Zhang know that that box would also unleash a vicious squall of blame and geopolitical acrimony worthy of Pandora herself....
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized COVID-19 overnight Source Type: news
Over the past few years, Professor Zhang Yongzhen has made it his business to sequence thousands of previously unknown viruses. But he knew straight away that this one was particularly nasty. It was about 1:30 p.m. on Jan. 3 that a metal box arrived at the drab, beige buildings that house the Shanghai Public Health Clinical Center. Inside was a test tube packed in dry ice that contained swabs from a patient suffering from a peculiar pneumonia sweeping China’s central city of Wuhan. But little did Zhang know that that box would also unleash a vicious squall of blame and geopolitical acrimony worthy of Pandora herself....
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized COVID-19 overnight Source Type: news
Avian influenza outbreaks have been occurring on smallholder poultry farms in Asia for two decades. Farmer responses to these outbreaks can slow down or accelerate virus transmission. We used a longitudinal survey of 53 small-scale chicken farms in southern Vietnam to investigate the impact of outbreaks with disease-induced mortality on harvest rate, vaccination, and disinfection behaviors. We found that in small broiler flocks ( ≤16 birds/flock) the estimated probability of harvest was 56% higher when an outbreak occurred, and 214% higher if an outbreak with sudden deaths occurred in the same month. Vaccination and dis...
Source: eLife - Category: Biomedical Science Tags: Epidemiology and Global Health Microbiology and Infectious Disease Source Type: research
oves Wendy S. Barclay Jill Banks Ian H. Brown Outbreaks of highly pathogenic avian influenza virus (HPAIV) often result in the infection of millions of poultry, causing up to 100% mortality. HPAIV has been shown to emerge from low pathogenicity avian influenza virus (LPAIV) in field outbreaks. Direct evidence for the emergence of H7N7 HPAIV from a LPAIV precursor with a rare di-basic cleavage site (DBCS) was identified in the UK in 2008. The DBCS contained an additional basic amino acid compared to commonly circulating LPAIVs that harbor a single-basic amino acid at the cleavage site (SBCS). Using reverse genetic...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
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