This study investigated possible seasonal trends in the Campylobacter jejuni carrier state of market broilers. In this study, broiler carcasses, 15 each of two major companies, were obtained from a local supermarket each month for an entire year to evaluate the presence of C. jejuni on the carcasses. Direct plating and the whole carcass rinse procedure were used for C. jejuni detection. Resuscitation of damaged cells and preenrichment of low numbers of micoorganisms were accomplished by Hunt's procedure. None of the carcasses tested positive from direct plating of skin flora in this study. After both Company A and Company B broiler samples were enriched, 69% (229/330) of the raw commercial broilers were, positive for C. jejuni. The highest recovery rates were obtained during the warmer months of the year, from May through October (93, 97, 97, 87, 87, and 93% respectively), and the lowest were obtained in December (7%) and January (33%). Storage time, due to slow movement of broilers, appeared to affect the detectability of C. jejuni during December and January. This study shows that seasons of the year influence C. jejuni detectability and the carrier state in market broilers at retail level.
Spontaneous laceration of the ascending aorta may result in (1) through-and-through laceration causing hemopericardium, (2) limited intramural dissection of blood (incomplete dissecting aneurysm), or (3) classical dissecting aneurysm. The latter is the most common manifestation. Background conditions include either extensive cystic medial necrosis (as may be seen in Marfan's syndrome) or hypertension. The latter condition is universally associated with cystic medial necrosis but classically the medial lesion is of minimal degree. Aortic stenosis may be an underlying cause of spontaneous laceration of the ascending aorta.
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