{"id":2068,"date":"2022-08-04T15:10:20","date_gmt":"2022-08-04T03:10:20","guid":{"rendered":"https:\/\/www.awanuilabs.co.nz\/south\/otagosouthland\/?page_id=2068"},"modified":"2022-08-04T15:10:21","modified_gmt":"2022-08-04T03:10:21","slug":"bartonella-henselae","status":"publish","type":"page","link":"https:\/\/www.awanuilabs.co.nz\/south\/otagosouthland\/referrers\/microbiology-resources\/how-do-i-diagnose\/bartonella-henselae\/","title":{"rendered":"Bartonella henselae"},"content":{"rendered":"\n<p><strong>Infection:<\/strong> <em>Bartonella henselae<\/em> infection; cat scratch disease<\/p>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\"><strong>Brief description<\/strong>:<\/summary><div class=\"ab-accordion-text\">\n<ul id=\"block-0390d4aa-5f61-44cf-a00d-4e031bace65c\"><li>Bacterial infection transmitted from infected cats via scratch, bite or other contact.<\/li><li>Most commonly affects children. Typical illness is localised infection at site of scratch, followed by regional lymphadenopathy in following weeks. Most commonly axilla or neck nodes. Can reach very large size.<\/li><li>Usually self-limiting, but rarely can involve other organs e.g. eyes, liver, spleen, heart valves.<\/li><\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\"><strong>Did you know?<\/strong><\/summary><div class=\"ab-accordion-text\">\n<p>Infected cats\/kittens are usually &lt;1 year old and show no symptoms of infection themselves. Higher risk if they have fleas or are known fighters. Less common to get infection from an older cat.<\/p>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\"><strong>Who should I test?<\/strong><\/summary><div class=\"ab-accordion-text\">\n<ul id=\"block-185a33cd-594e-45b0-bf3b-386f1409cfc1\"><li>Consider testing in children with <strong>multiple enlarged lymph nodes<\/strong>, or nodes that are <strong>not reducing in size at 2-3 weeks<\/strong>. Keep in mind other more serious causes of persistent lymphadenopathy.<\/li><li>Discuss with a microbiologist if infection involving other organs is suspected.<\/li><\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\"><strong>Test of choice:<\/strong><\/summary><div class=\"ab-accordion-text\">\n<p>Request <a href=\"https:\/\/scg.aphg.co.nz\/#!\/WEL\/details\/CSD\"><strong>Bartonella serology<\/strong><\/a><\/p>\n\n\n\n<p>Interpretation of serology can be <strong>complicated<\/strong>, and both false negatives and false positives can occur.<\/p>\n\n\n\n<ul><li>A <strong>strongly positive<\/strong> result generally makes the diagnosis <strong>likely<\/strong>, however less strong results can be difficult to interpret.<\/li><li>Interpretation of serology should take into account the <strong>pre-test probability<\/strong> of infection. Discuss with a clinical microbiologist if uncertain.<\/li><\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\"><strong>Tests to avoid\/specialist tests:<\/strong><\/summary><div class=\"ab-accordion-text\">\n<p><strong><a href=\"https:\/\/scg.aphg.co.nz\/#!\/WEL\/details\/_ptg3151\">Bartonella PCR<\/a><\/strong><\/p>\n\n\n\n<ul><li>This can be performed on blood or tissue samples from affected tissues. Sensitivity can be limited, but specificity is high, so a positive result confirms the diagnosis. Only used in certain circumstances \u2013 discuss with a clinical microbiologist first.<\/li><\/ul>\n<\/div><\/details><\/div>\n","protected":false},"excerpt":{"rendered":"Infection: Bartonella henselae infection; cat scratch disease","protected":false},"author":18,"featured_media":0,"parent":2060,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-left-sidebar.php","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bartonella henselae &#8212; Awanui Labs \u2013 Otago, Southland<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.awanuilabs.co.nz\/south\/otagosouthland\/referrers\/microbiology-resources\/how-do-i-diagnose\/bartonella-henselae\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bartonella henselae &#8212; 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