Tag #Virus Mutation

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arabic.cnn.com

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Dec 28, 16:08

Delaware Bay: A Crucial Avian Flu Monitoring Site

Every May, migrating shorebirds flock to Delaware Bay to feed on horseshoe crab eggs, providing scientists with a unique opportunity to monitor avian influenza viruses like H5N1, which has recently spread to mammals, raising concerns about potential human transmission.

Delaware Bay: A Crucial Avian Flu Monitoring Site

Every May, migrating shorebirds flock to Delaware Bay to feed on horseshoe crab eggs, providing scientists with a unique opportunity to monitor avian influenza viruses like H5N1, which has recently spread to mammals, raising concerns about potential human transmission.

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What is the significance of the Delaware Bay's ecological event for global health, and what immediate implications does it have?

Each May, during the first full moon, horseshoe crabs arrive in Delaware Bay to mate and lay eggs, attracting hundreds of thousands of migrating shorebirds that feed on the protein and fat-rich eggs. Some birds double their weight in a week before continuing their journey between South America and Arctic breeding grounds. This unique ecological event allows scientists to monitor avian influenza viruses.

abcnews.go.com

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Dec 27, 22:09

Bird Flu Virus Mutation Found in Severe Louisiana Case

A genetic analysis revealed a bird flu virus mutation in a Louisiana patient, the nation's first severe case, raising concerns about potential human-to-human transmission, although the risk remains low.

Bird Flu Virus Mutation Found in Severe Louisiana Case

A genetic analysis revealed a bird flu virus mutation in a Louisiana patient, the nation's first severe case, raising concerns about potential human-to-human transmission, although the risk remains low.

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How did the Louisiana patient contract the bird flu, and what risk factors contributed to their severe illness?

This mutation enhances the virus's potential to infect humans, mirroring a 'lock and key' mechanism where the virus's key may be adapting to fit human cells. While not currently causing widespread transmission, this finding underscores the virus's potential for future evolution. The patient's severe illness and contact with infected birds highlight the risk factors.

lentreprise.lexpress.fr

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Nov 28, 01:10

Grippe aviaire H5N1 : risque pandémique aux États-Unis ?

Aux États-Unis, 55 cas humains de grippe aviaire H5N1 ont été recensés en 2024, dont un cas au Canada présentant des mutations inquiétantes, soulevant des craintes de pandémie, aggravées par une réponse gouvernementale jugée inadéquate.

Grippe aviaire H5N1 : risque pandémique aux États-Unis ?

Aux États-Unis, 55 cas humains de grippe aviaire H5N1 ont été recensés en 2024, dont un cas au Canada présentant des mutations inquiétantes, soulevant des craintes de pandémie, aggravées par une réponse gouvernementale jugée inadéquate.

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Quels sont les risques à long terme liés à la propagation du virus H5N1 et comment une action rapide peut-elle limiter les dommages ?

Le risque d'une pandémie de grippe aviaire est accru par la capacité du virus à muter et à se recombiner avec d'autres virus influenza chez les mammifères, comme le porc. L'inaction des autorités américaines, notamment le manque de tests et de transparence, crée une vulnérabilité globale. Le développement rapide d'antiviraux et de vaccins est crucial.

cnn.com

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Dec 27, 16:10

H5N1 Virus Mutates in US Patient, Raising Concerns

A Louisiana patient's H5N1 bird flu infection involved a virus with mutations potentially increasing human transmissibility, raising concerns but with no evidence of spread; the patient's exposure stemmed from a backyard flock, while the CDC says the risk to the general public remains low.

H5N1 Virus Mutates in US Patient, Raising Concerns

A Louisiana patient's H5N1 bird flu infection involved a virus with mutations potentially increasing human transmissibility, raising concerns but with no evidence of spread; the patient's exposure stemmed from a backyard flock, while the CDC says the risk to the general public remains low.

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How did the patient's backyard flock exposure contribute to the virus's mutation?

Genetic analysis revealed mutations in the Louisiana patient's H5N1 virus not present in the birds, suggesting they developed during the patient's illness. These mutations, also seen in a Canadian case, might improve the virus's binding to human respiratory cells. The CDC emphasizes that the general public's risk remains low.

theguardian.com

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Dec 16, 13:10

Avian Flu: US Egg Shortage and Pandemic Preparedness

Avian flu, causing a US egg shortage impacting vaccine production, has seen mammal-to-mammal transmission in cows leading to mild human infections; however, a single mutation could make it easily transmissible between humans.

Avian Flu: US Egg Shortage and Pandemic Preparedness

Avian flu, causing a US egg shortage impacting vaccine production, has seen mammal-to-mammal transmission in cows leading to mild human infections; however, a single mutation could make it easily transmissible between humans.

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What are the immediate implications of the US egg shortage caused by avian flu, and how does it affect pandemic preparedness?

The US faces an egg shortage due to avian flu, impacting vaccine production. Hundreds of thousands of chickens have been culled, and mammal-to-mammal transmission has been confirmed in US dairy cows, leading to human infections, although so far mild. A single mutation could make the virus easily transmissible between humans.

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