{"id":50279,"date":"2024-05-14T13:39:45","date_gmt":"2024-05-14T13:39:45","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/05\/14\/cows-might-host-both-human-and-bird-flus\/"},"modified":"2024-05-14T13:39:45","modified_gmt":"2024-05-14T13:39:45","slug":"cows-might-host-both-human-and-bird-flus","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/05\/14\/cows-might-host-both-human-and-bird-flus\/","title":{"rendered":"Cows might host both human and bird flus"},"content":{"rendered":"<div style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.sciencenews.org\/t_saey?ssl=1\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Cows might host both human and bird flus\" title=\"Cows might host both human and bird flus\" \/><\/div> \r\n<br><div>\n\t\t\t<div class=\"rich-text rich-text--with-sidebar single__rich-text___RmCDp\" data-component=\"video-embed\">\n\t\t\t\t\n\n\n\n\n<p>Cows have entry portals for both human and bird flus. This new finding may mean that cattle could host both types of flus at once. The two viruses could then swap parts to create a new type of influenza, maybe even one that could cause a pandemic.<\/p>\n\n\n\n<p>Cattle have <a href=\"https:\/\/www.biorxiv.org\/content\/10.1101\/2024.05.03.592326v1\" target=\"_blank\" rel=\"noopener\">three types of influenza A receptors<\/a> \u2014 entry portals viruses use to infect host cells \u2014 veterinarian Charlotte Kristensen and colleagues report May 3 at bioRxiv.org. One portal is like a receptor that decorates human cells. Another is like that found in chickens. And the third resembles receptors from ducks.<\/p>\n\n\n<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.email-conversion {\n  border: 1px solid #ffcccb;\n  color: white;\n  margin-top: 50px;\n  background-image: url(\"\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg\");\n  padding: 20px;\n  clear: both;\n}\n\n]]><\/style>\n\n\n\n                        <style class=\"is-layout-flow 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*{color:var(--zephr-color-text-main)}.apple-pay-button{display:inline-block;-webkit-appearance:-apple-pay-button;-apple-pay-button-type:pay;width:440px;max-width:100%;height:45px;margin-top:20px}.apple-pay-button-black{-apple-pay-button-style:black}.zephr-payment-form-disabled-div{pointer-events:none;opacity:0.8}.zephr-payment-form-relative-container{position:relative}.zephr-payment-form-flex-container{display:flex}.zephr-form-input-inner-button{cursor:pointer;position:absolute;top:50%;transform:translateY(-50%);right:5px;padding:10px 5px}.zephr-payment-form-input-inner-text{color:var(--zephr-color-text-main);font-size:12px;font-weight:bold;font-family:var(--zephr-typography-body-font),\n            var(--zephr-typography-body-fallbackFont)}\n]]><\/style>\n                        \n                        <style><![CDATA[#zephr-payment-form-root > div {\n    background-image: url(https:\/\/sciencenews.org\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg);\n    padding:20px;\n    max-width: 100%;\n   \n}\n\n#zephr-payment-form-root > div > button {\n    max-width: 50%;\n    margin-left: auto;\n    margin-right: auto;\n    border-radius: 1px;\n    background-color: #e04821;\n    color: white;\n}\n#zephr-payment-form-root > div > div.zephr-payment-form-custom-text.svelte-s692p7{\n    color:white;\n}\n#zephr-payment-form-root > div > label > span {\n    color:white;\n}    \n.zephr-payment-form-input-label.svelte-1ozx4pz span.svelte-1ozx4pz {\n    display: none;\n}\n\n.zephr-payment-form-custom-text.svelte-s692p7 {\n    color:white;\n}\n\nbutton.zephr-payment-form-button.svelte-1hlz8zp.zephr-payment-form-button-top-margin {\n    background: #d4441f;\n    font-weight: bold;\n    text-transform: uppercase;\n}\n\nlabel.zephr-payment-form-checkbox-label.svelte-1rzrrj8 {\n    color: white;\n    font-size: 1.6rem;\n}\n\n.zephr-payment-form-custom-text.svelte-s692p7 {\n    margin-top: .2rem;\n}\n\n.zephr-payment-form-checkbox-label.svelte-eq3e4e {\n    display: flex;\n    align-items: center;\n    font-family: var(--zephr-typography-body-font), var(--zephr-typography-body-fallbackFont);\n    color: white;\n    font-weight: bold;\n}]]><\/style>\n                        \n                        \n<\/aside>\n\n\n<p>One of those avian receptors may have allowed a virus from a wild bird to infect a dairy cow in Texas, leading to the current H5N1 bird flu outbreak in cattle.<\/p>\n\n\n\n<p>Researchers have long thought cattle were resistant to influenza A, says Kristensen, of the University of Copenhagen. Some cows have been infected in lab studies, and there have been suggestions that cows might sometimes catch human seasonal influenza. But it surprised many experts when H5N1 bird flu was found in <a href=\"https:\/\/www.sciencenews.org\/article\/h5n1-bird-flu-cows-milk-virus-health\">dairy cattle and in grocery store milk<\/a> this spring (<em>SN: 4\/25\/24<\/em>).<\/p>\n\n\n\n<p>In the new study, Kristensen and colleagues tested whether cows have receptors that bird flu viruses can use to infect their cells. Not only did the team find such entry portals but also found that the receptors, especially the duck version, were abundant in the mammary glands, at low levels in the respiratory tract and at very low levels in the brain. That fits with the description of the illness in cows, Kristensen says, which affects milk production but doesn\u2019t seem to make most cows very sick.<\/p>\n\n\n\n<p>It\u2019s still unclear how an infection gets to the udder. It\u2019s possible the virus enters through the teat via contaminated milking machines. But none of the receptors are present in the ducts leading up to the milk-producing glands, Kristensen says. The virus might get to the mammary glands through the blood, but so far there are no reports of the virus in cows\u2019 blood, she says.<\/p>\n\n\n\n<p>\u201cThese are just preliminary results,\u201d Kristensen says, \u201cbut still important, because right now we really [don\u2019t] know very much about cattle and influenza viruses.\u201d<\/p>\n\n\n\n\t\t\t<\/div> <!-- \/.rich-text -->\n\t\t\t\n<footer class=\"article-footer__wrapper___eChRS article-footer__with-sidebar___9oDuK\">\n\t\t\t<p class=\"article-footer__feedback___sNXjz\">Questions or comments on this article? E-mail us at\u00a0<a href=\"https:\/\/www.sciencenews.org\/article\/mailto:feedback@sciencenews.org\">feedback@sciencenews.org<\/a> | <a href=\"https:\/\/www.sciencenews.org\/permission-republish\">Reprints FAQ<\/a><\/p>\n\t\n\t\n\t\n\t\t\t\n\t\n\t\n<div class=\"author-bio__wrapper___ODe-4\">\n\t\t\t<figure class=\"author-bio__figure___e3jd0\">\n\t\t\t<a class=\"author-bio__thumbnail___TixlC\" href=\"https:\/\/www.sciencenews.org\/author\/tina-hesman-saey\" aria-hidden=\"true\" tabindex=\"-1\">\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/figure>\n\t\n\t<div class=\"author-bio__content___F9GU3\">\n\t\t\n\n\t\t<div class=\"author-bio__bio___jkxvt\">\n\t\t\t<p>Tina Hesman Saey is the senior staff writer and reports on molecular biology. She has a Ph.D. in molecular genetics from Washington University in St. Louis and a master\u2019s degree in science journalism from Boston University.<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\t<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.donate-box {\n  border-top: 7px solid red !important;\n  border: 1px solid #ffcccb;\n  margin-top: 50px;\n  background-color: #fdfbf2;\n  padding: 20px;\n}\n.from-nature-index__heading___AhgOe {\n  display: none;\n}\n]]><\/style>\n\n\n\n<style><![CDATA[.from-nature-index__heading___AhgOe {\n    display: none;\n}]]><\/style><div id=\"donateConversion\" class=\"wp-block-group donate-box\">\n<p class=\"has-text-align-left\" style=\"font-size:1.1em\">\nWe are at a critical time and <strong><mark>supporting science journalism \nis more important than ever<\/mark><\/strong>. <em>Science News<\/em> and our \nparent organization, the Society for Science, need your help to strengthen \nscientific literacy and ensure that important societal decisions are made \nwith science in mind.<\/p>\n\n<p class=\"has-text-align-left\" style=\"font-size:1.1em\">\nPlease \n<a href=\"https:\/\/www.sciencenews.org\/subscribe1-print-digital?key=9MENDCON&amp;utm_source=end-of-article&amp;utm_medium=site&amp;utm_campaign=non-sub-control\">\nsubscribe to <em>Science News<\/em> and <strong>add $16<\/strong><\/a> to expand \nscience literacy and understanding.\n<\/p>\n\n\n\n\n<\/div>\n<\/aside><\/footer>\n\t\t<\/div>\r\n<br>\r\n<br><a href=\"https:\/\/www.sciencenews.org\/article\/cows-host-human-bird-flus-h5n1\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>Cows have entry portals for both human and bird flus. This new finding may mean that cattle could host both types of flus at once. The two viruses could then swap parts to create a new type of influenza, maybe even one that could cause a pandemic. Cattle have three types of influenza A receptors [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":50280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","fifu_image_url":"https:\/\/www.sciencenews.org\/t_saey","fifu_image_alt":"","footnotes":""},"categories":[606],"tags":[1336,5839,50446,7284,4261],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/50279"}],"collection":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/comments?post=50279"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/50279\/revisions"}],"predecessor-version":[{"id":50281,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/50279\/revisions\/50281"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/50280"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=50279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=50279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=50279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}