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All investigations were normal except elevated liver enzymes and cerebrospinal fluid examination that revealed elevated protein without pleocytosis. A possible diagnosis of Guillain\u2013Barr\u00e9 syndrome (GBS) was considered and electromyogram was compatible with axonal form of GBS. To our knowledge this is the youngest case of GBS acquired postnatally and the first in children associated with H1N1 virus.<\/jats:p>","DOI":"10.1136\/bcr.12.2011.5462","type":"journal-article","created":{"date-parts":[[2012,3,27]],"date-time":"2012-03-27T06:47:16Z","timestamp":1332830836000},"page":"bcr1220115462","source":"Crossref","is-referenced-by-count":4,"title":["A 3-month-old baby with H1N1 and Guillain\u2013Barr\u00e9 syndrome: Figure 1"],"prefix":"10.1136","volume":"2012","author":[{"given":"Alexandra","family":"Vasconcelos","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco","family":"Abecasis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rita","family":"Monteiro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristina","family":"Camilo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marisa","family":"Vieira","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mamede","family":"de Carvalho","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manuela","family":"Correia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2012,3,27]]},"reference":[{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.1","doi-asserted-by":"publisher","DOI":"10.1136\/adc.2004.065706"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.2","doi-asserted-by":"publisher","DOI":"10.1093\/qjmed\/77.3.1297"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.3","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(05)67665-9"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.4","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-5728(99)00195-2"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.5","doi-asserted-by":"crossref","first-page":"266","DOI":"10.1016\/j.disamonth.2010.02.006","article-title":"Guillain-Barr\u00e9 syndrome differential diagnosis","volume":"56","author":"Randall","year":"2010","journal-title":"Disease-a-month: DM"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.6","doi-asserted-by":"publisher","DOI":"10.1016\/S1473-3099(10)70140-7"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.7","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwr072"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.8","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1093\/oxfordjournals.aje.a112795","article-title":"Guillain-Barre syndrome following vaccination in the National Influenza Immunization Program, United States, 1976\u20131977.","volume":"110","author":"Schonberger","year":"1979","journal-title":"Am J Epidemiol"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.9","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.0b013e3181d6b869"},{"key":"2025082623555156000_2012.mar26_1.bcr1220115462.10","unstructured":"The Brighton Collaboration. 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