{"id":5587,"date":"2021-09-13T11:04:00","date_gmt":"2021-09-13T10:04:00","guid":{"rendered":"https:\/\/sesc.cat\/pneumonia-in-a-calf-caused-by-mycoplasma-bovis\/"},"modified":"2022-03-24T18:49:05","modified_gmt":"2022-03-24T17:49:05","slug":"pneumonia-in-a-calf-caused-by-mycoplasma-bovis","status":"publish","type":"post","link":"https:\/\/sesc.cat\/en\/pneumonia-in-a-calf-caused-by-mycoplasma-bovis\/","title":{"rendered":"Pneumonia in a calf caused by Mycoplasma bovis"},"content":{"rendered":"

We received samples from a 11-month-old carcass of a Asturiana de los Valles\u00a0breed\u00a0<\/em>calf. The lung showed nodules from 0,5 cm to 2 cm in diameter, with caseous content at the cut surface, that were distributed craneo-ventrally in the apical and caudal lobes. Also, scant similar nodules showing similar appearance could be seen in the parietal pleura. Additionally, a big mass was observed in the neck, measuring 13cm in diameter, with a similar appearance at the cut section. The evaluated lymph nodes were increased in size and reactive but didn\u2019t show granulomatous lesions.<\/p>\n

At histopathology, the pulmonary lesions were similar to the muscular ones, consisting of suppurative and necrotizing pneumonia, fascitis and myositis<\/strong>, of a chronic and severe nature. Also, the bronchi showed a severe and chronic suppurative bronchitis with progression to bronchiectasis.<\/p>\n

These lesiosn are characteristic of a\u00a0Mycoplasma bovis<\/em><\/strong>\u00a0infection, but to confirm the result we submitted samples to the molecular biology and microbiology laboratories. In our case, the PCR against M. bovis<\/em> yielded positive results, and growth was also observed in mycoplasma-specific culture. A general culture was also performed, and Pasteurella multocida<\/em> colonies were obtained. It is frequent that the lesions caused by M. bovis <\/em>get over infected with other bacteria, producing lesions greater in size and with a more fluid purulent content, which were observed in our case. Regarding the neck lesions, the bibliography describes that, rarely, nodular lesions in the trachea or peritracheal tissues, with a similar appearance that those found in the lung, are observed. (AC)<\/p>\n

\"Pulm\u00f3

Lung showing craneo-ventral consolidation, with multifocal nodules ranging from 0,5cm to 2cm in diameter.<\/p><\/div>\n

\"Detall

Detail of the cut section of the pulmonary nodules. Most of the nodules showed a caseous appearance at the section, but the biggest ones frequently show a more fluid purulent content due to over infection with other bacteria.<\/p><\/div>\n

\"Massa

Extensive cervical mass. It showed caseous appearance at the cut section.<\/p><\/div>\n

\"Lesions

Nodular lesions in the parietal pleura.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

We received samples from a 11-month-old carcass of a Asturiana de los Valles\u00a0breed\u00a0calf. The lung showed nodules from 0,5 cm to 2 cm in diameter, with caseous content at the cut surface, that were distributed craneo-ventrally in the apical and caudal lobes. Also, scant similar nodules showing similar appearance could be seen in the parietal […]<\/p>\n","protected":false},"author":6,"featured_media":8653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[171,257],"tags":[397,405,392],"class_list":["post-5587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bovine-2","category-thoracic-cavity-bovine-2","tag-infectious-en","tag-lungs-en","tag-thoracic-cavity-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts\/5587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/comments?post=5587"}],"version-history":[{"count":0,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/posts\/5587\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/media\/8653"}],"wp:attachment":[{"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/media?parent=5587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/categories?post=5587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sesc.cat\/en\/wp-json\/wp\/v2\/tags?post=5587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}