{"id":55576,"date":"2024-05-21T18:06:33","date_gmt":"2024-05-21T18:06:33","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/05\/21\/human-body-lice-could-harbor-the-plague-and-spread-it-through-biting\/"},"modified":"2024-05-21T18:06:33","modified_gmt":"2024-05-21T18:06:33","slug":"human-body-lice-could-harbor-the-plague-and-spread-it-through-biting","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/05\/21\/human-body-lice-could-harbor-the-plague-and-spread-it-through-biting\/","title":{"rendered":"Human body lice could harbor the plague and spread it through biting"},"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=\"Human body lice could harbor the plague and spread it through biting\" title=\"Human body lice could harbor the plague and spread it through biting\" \/><\/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>Rats and their fleas take the rap for spreading the plague, but lice that infest people may share the blame.<\/p>\n\n\n\n<p>Human body <a href=\"http:\/\/journals.plos.org\/plosbiology\/article?id=10.1371\/journal.pbio.3002625\" target=\"_blank\" rel=\"noopener\">lice can harbor plague-causing bacteria<\/a> and can transmit the disease by biting, researchers report May 21 in <em>PLOS Biology<\/em>.<\/p>\n\n\n\n<p>Some studies have suggested that <em>Yersinia pestis<\/em>, the bacterium that causes the plague, spread too quickly during the <a href=\"https:\/\/www.sciencenews.org\/article\/plague-black-death-ancient-dna-bacteria-europe-origin-asia\">Black Death of 1346 to 1353<\/a> and other outbreaks to be the sole work of rats and fleas (<em>SN: 6\/15\/22<\/em>). Human body lice, which feed on human blood, might be involved, but previous research found that the lice aren\u2019t very efficient at spreading the disease.<\/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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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>Researchers from the U.S. National Institute of Allergy and Infectious Diseases in Hamilton, Mont., revisited whether body lice (<em>Pediculus humanus humanus<\/em>) can spread the plague. The team simulated human skin with membranes that lice can puncture with their mouth parts to get a blood meal. Lice fed blood with <em>Y. pestis<\/em> in it developed infections that lasted about a week, the researchers found.<\/p>\n\n\n\n<p>In some lice, the bacteria concentrated in a unique set of glands called Pawlowsky glands, which may produce a lubricant to help mouthparts extend and retract. Those lice could transmit the bacteria during a short three-hour feeding period and in large enough doses to cause disease, the researchers discovered. Lice that carried the plague in their guts could spread the bacteria if given 20 hours, but not as efficiently as the ones with the gland infections.<\/p>\n\n\n\n<p>These findings suggest the plague could spread through lice bites \u2014 a new way for lice to spread disease. Body lice spread other bacterial diseases, including trench fever and typhus, to people when crushed lice or their bacteria-laden feces are ground into the skin. <\/p>\n\n\n\n<p>And body lice could be infected with <em>Y. pestis<\/em> strains that have genetic mutations that prevent the bacterium from infecting fleas, the team found. The findings suggest that body lice are better at transmitting plague than previously thought, the researchers note, and might be just the culprits on which to pin some plague outbreaks.<\/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\/lice-bites-spread-plague\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>Rats and their fleas take the rap for spreading the plague, but lice that infest people may share the blame. Human body lice can harbor plague-causing bacteria and can transmit the disease by biting, researchers report May 21 in PLOS Biology. Some studies have suggested that Yersinia pestis, the bacterium that causes the plague, spread [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":55577,"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":[54833,2776,54831,4261,54830,54832,4521],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/55576"}],"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=55576"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/55576\/revisions"}],"predecessor-version":[{"id":55578,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/55576\/revisions\/55578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/55577"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=55576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=55576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=55576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}