【美國首次發現豬隻感染禽流感，引發潛在風險提高的擔憂】
科學家擔心在該物種身上可能產生能夠更有能力在人和人之間傳播的混合病毒
2024/10/30 作者 Helen Branswell
美國農業部週三報告，在奧勒岡州的一處農場發現了H5N1禽流感病毒，這是該病毒首次在美國的豬隻中被檢測到。奧勒岡當局稍後表示，可能還有第二頭豬也被感染。

豬有時被稱為流感病毒的「混合容器」，因為它們可以同時感染禽流感病毒和人類流感病毒。如果這些動物同時感染了兩種或更多病毒，這些病毒可能會交換基因，有可能產生比一般禽流感病毒更能在人和人之間傳播的混合病毒。這種重組現象導致了2009年H1N1大流行。
完整文章⬇

A person in the United States has tested positive for highly pathogenic avian influenza (HPAI) A(H5N1) virus (“H5N1 bird flu”), as reported by Texas and confirmed by CDC. This person had exposure to dairy cattle in Texas presumed to be infected with HPAI A(H5N1) viruses.

The affected facility recently imported cattle from another state that has identified cases of HPAI in cattle, which suggests the virus may be transmitted from cow-to-cow, in addition to previous reports indicating cattle were acquiring the virus from infected birds.

x.com/chrischirp/s...

New paper out shows that repeated exposure to Omicron lineages (incl via vax) can redirect our immune response away from ancestral wuhan strain imprinting enabling it to better respond to the new lineages www.nature.com/articles/s41... (may do a fuller explanation if of interest in substack)

西班牙的調查 2022/03~2023/03年間，篩檢183隻流浪貓，發現只有四隻出現禽流感抗體，血清陽性率2.19%。
研究者做出結論，看起來貓在這波禽流感並沒有發揮傳播作用。

HPAI now confirmed in the Antarctic region. Both the region (South Georgia) and the species (Skuas) were highlighted as the highest risk in our risk assessment. Overall, devastating news. www.bas.ac.uk/media-post/f...

As predicted, bird flu has made it to the Sub-Antarctic region. Now, we need to wait to see the impact of this virus is going to have on seabirds and marine mammals 🐧🦭🇦🇶 #ExeterCEC 🧪🌏🦑

Does CRISPR hold an answer to protecting poultry — and the people who work with poultry — from bird flu viruses? @statnews.bsky.social's Drew Joseph explores. www.statnews.com/2023/10/10/t...

The deaths of two people in Cambodia this week have been linked to the H5N1 bird flu.