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H5N1

H5N1

by Flo Débarre Flo Débarre

A curated feed on H5N1 This feed publishes posts and replies from accounts in a list when they use terms like H5, bird flu, avian flu, HPAI. It was created with blueskyfeedcreator.com It refreshes at some yet unknown time interval BlueskyFeedCreator.com

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  • 💙 Liked by 17 users
  • 📅 Updated 6 months ago
  • ⚙️ Provider blueskyfeedcreator.com

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Michelle Wille
@duckswabber.bsky.social
6 minutes ago
Prior infection with human H1N1 provides some cross protection against H5N1 in ferrets. Here, vaccination human seasonal flu vaccines = partial protection in ferrets against disease caused by H5N1 due to cross-reactive antibodies. 👉 wwwnc.cdc.gov/eid/article/...
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Michelle Wille
@duckswabber.bsky.social
11 minutes ago
In Egypt: 2022-24, 446,790 swabs from commercial farms, backyard, LBM. H5N8 (EA-2020-A genotype) more common than H5N1 (EA-2021-AB genotype). H5N8 under strong selection pressure. 👉 www.tandfonline.com/doi/f….
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Michelle Wille
@duckswabber.bsky.social
15 minutes ago
In Scottish blood donors, population immunity is heterogeneous, age-dependent differences against H5, H7, H9: H7 primarily neutralised via head domain epitopes + non-glycan-targeted IgG2 antibodie. H5 targeted via stem epitopes + IgG1-mediated. 👉 www.medrxiv.org/content/1….
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Michelle Wille
@duckswabber.bsky.social
20 minutes ago
Immunocompromised pet cat (diabetic, feline infectious peritonitis FIP) infected with B3.13 = acute fever, rapidly worsening respiratory distress, liver dysfunction. Antigen in lung, brain, urine, or lymphoid tissues 👉 journals.asm.org/doi/10.1….
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Michelle Wille
@duckswabber.bsky.social
23 minutes ago
Cow-level factors which influence clinical signs when infected with HPAI H5N1: pregnancy and parity (# of times a cow has given birth). 👉 www.sciencedirect.com/sci….
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Thijs Kuiken
@thijskuiken.bsky.social
3 days ago
10 September 2025: Highly pathogenic avian influenza H5N1 in two poultry farms in Tessin and Zarnewanz, Mecklenburg-Vorpommern, north Germany. The possible start of an autumn peak of the disease in Europe, and a warning for people involved with wildlife and poultry. wahis.woah.org#/in-review/6...
Locations of the highly pathogenic avian influenza outbreaks on two poultry farms in Zarnewanz and Tessin, Mecklenburg-Vorpommern, Germany. From: https://wahis.woah.org/#/in-review/6780
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CIDRAP
@cidrap.bsky.social
3 days ago
Minnesota reports first H5N1 detection in poultry since April The USDA also reported an H5 detection in a raccoon in Minnesota. www.cidrap.umn.edu/a...
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CIDRAP
@cidrap.bsky.social
4 days ago
Quick takes: Moderate global COVID risk, California vaccine guidance, Michigan avian flu alert The WHO lowered its assessment from high to medium based on several factors, including high population immunity and improved clinical management.
Quick takes: Moderate global COVID risk, California vaccine guidance, Michigan avian flu alert

www.cidrap.umn.edu

Quick takes: Moderate global COVID risk, California vaccine guidance, Michigan avian flu alert

The WHO lowered its assessment from high to medium, based on several factors, including high population immunity and improved clinical management.
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Helen Branswell 🇨🇦
@helenbranswell.bsky.social
5 days ago
Belatedly: #USDA announced that Nebraska has joined the states that have detected #H5N1 #birdflu in dairy cattle. Since H5 was first detected in cows in the US in spring 2024, 1,080 herds in 18 states have tested positive for the virus. www.aphis.usda.gov/news/a….
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Helen Branswell 🇨🇦
@helenbranswell.bsky.social
6 days ago
#USDA announcement that Nebraska joins the states that have reported #H5N1 #birdflu in dairy cows says this is the 17th state. As @thijskuiken.bsky.social notes, it is the 18th.

Highly pathogenic avian influenza H5N1 detected in dairy cows in Nebraska: first time in this state. Total now comes to 1,080 dairy farms infected in 18 states of the USA since March 2024. See map (not yet updated with Nebraska case) for overview. www.aphis.usda.gov/news/agency-...

Number of confirmed cases in dairy cow farms by state, from March 2024 to 2 September 2025. Source: https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/hpai-confirmed-cases-livestock
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Thijs Kuiken
@thijskuiken.bsky.social
6 days ago
Highly pathogenic avian influenza H5N1 detected in dairy cows in Nebraska: first time in this state. Total now comes to 1,080 dairy farms infected in 18 states of the USA since March 2024. See map (not yet updated with Nebraska case) for overview. www.aphis.usda.gov/news/a….
Number of confirmed cases in dairy cow farms by state, from March 2024 to 2 September 2025. Source: https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/hpai-confirmed-cases-livestock
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Thijs Kuiken
@thijskuiken.bsky.social
10 days ago
Highly pathogenic avian influenza H5N1 reaches Gough Island, where it is associated with mortality in three Tristan skuas. This is worrying because Gough Island is an important breeding site for seabirds, including several species of global conservation concern. www.biorxiv.org/content/1….
Tristan skua (Stercorarius antarcticus hamiltoni). Photo by Noah Strycker.
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Thijs Kuiken
@thijskuiken.bsky.social
10 days ago
This level of poultry production increases risk of emergence and transmission of highly pathogenic avian influenza (bird flu), with negative impacts on the health of humans, domestic animals, wildlife and ecosystems (Bellido-Martin 2025). 7/x
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Michelle Wille
@duckswabber.bsky.social
17 days ago
mRNA-H5 vaccine w modified HA trimer of A/turkey/Stavropol/320-01/2020 (H5N8). BALB/c mice vaccinated: stimulate specific humoral and T-cell immune responses, 100% protection. 👉 www.mdpi.com/2076-393X/13...
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Michelle Wille
@duckswabber.bsky.social
17 days ago
2023 HPAI outbreak in South American Sea Lions: atypically high number of abortions + abnormal reproductive behaviours: including males retaining and mounting females outside the breeding season + necrophilia 👉 revistas.unal.edu.co/inde….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
2344b in India - H5N1 likely imported from E Asia (Japan), and H5N8 from China/Japan. Multiple introductions detected. 👉 www.sciencedirect.com/sci….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Development of a recombinant H5N1 expressing nanoluciferase (HPhTX NSs-Nluc) = tracking of virus in cultured cells, mice via in vitro, ex vivo, and in vivo imaging systems = useful for virology studies 👉 www.sciencedirect.com/sci….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Cow B3.13 vs EA-2020-C: 🔺 replication in cow mammary gland cells, 🔺 viral polymerase activity + 🔺 interferon antagonism in cow cells. Many IAVs able to replicated in bovine cells, particularly mammary gland. 👉 www.biorxiv.org/content/1….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
2021-24, Nansi Lake China. 2.1% AIV pos in wild birds, 10% in chickens. Detected HPAI H5, HPAI H7, H9. Lots of reassortment. Need for continued surveillance. 👉 www.mdpi.com/1999-4915/17...
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Gut commensals play important role in modulating vaccine-induced immunity (eg enhancement of mucosal IgA production, CD8+ T-cell activation). Engineered bacteria also help with antigen delivery > useful for future of HPAI vaccines? 👉 www.mdpi.com/2076-393X/13...
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Development of a CRISPR-based platform SHINE (Streamlined Highlighting of Infections to Navigate Epidemics) for H5. 100% specificity. promising platform for AIV diagnosis and surveillance 👉 www.medrxiv.org/content/1….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Mexico started vaccination to prevent + control HPAI. Vaccination = higher immune response in birds in most of Mexico's states. Seroconversion + seroprotection rates < 80 % during 1st evaluation period. Commercial birds with better immune response. 👉 www.sciencedirect.com/sci….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
digital RT-PCR against M and H5 to detect and quantify HPAI. Good sensitivity and specificity. 👉 www.eurosurveillance.org/….
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Michelle Wille
@duckswabber.bsky.social
17 days ago
Store-bought milk to profile collective H5N1 antibody response of dairy cattle herds: HA binding antibodies in samples from states w outbreaks, neutralised virus. Antibodies similar in activity + HA binding specificity. 👉 journals.asm.org/doi/10.1….
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Hensley Lab
@scottehensley.bsky.social
17 days ago
These new NA studies complement our recent publication that demonstrates that immune imprinting (in that case, H1 or H2 infection) primes cross-reactive H5N1 HA antibody responses. 4/ www.nature.com/articles/s41...
Immune history shapes human antibody responses to H5N1 influenza viruses - Nature Medicine

www.nature.com

Immune history shapes human antibody responses to H5N1 influenza viruses - Nature Medicine

H5N1 strain-specific antibodies are higher in older individuals and correlate more with birth year than with age, suggesting that younger individuals are potentially more likely to benefit from H5N1 v...
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