Second outbreak of Trichinella pseudospiralis in Europe: clinical patterns, epidemiological investigation and identification of the etiological agent based on the western blot patterns of the patients' serum.

Trichinellosis is a zoonotic disease due to the ingestion of raw or undercooked meat from animals infected with the larvae of nematodes belonging to the genus Trichinella. In January-February 2015, an outbreak of trichinellosis occurred in Genoa, Northern Italy. The epidemiological link was traced back to a dinner served at an agritourism farm on 31 December 2014, where a majority of the 52 guests had consumed the 'beef' steak tartare. The source of infection was not traced; however, it was noted that the amount of beef purchased officially for providing at the dinner did not correspond with that served, suggesting that meat of a different origin had been added to the beef to prepare the steak tartare. Clinical and laboratory data of 30 individuals out of the 52 (57.7%), of which four were hospitalized, were consistent with that of the case definition of trichinellosis. Western blot patterns of the sera from patients with confirmed trichinellosis were similar to the diagnostic pattern identified for the reference sera of Trichinella pseudospiralis but different from those of the control sera tested for patients infected with Trichinella spiralis and Trichinella britovi. Identification of T. pseudospiralis as the aetiological agent responsible for the outbreak of trichinellosis using an indirect tool represents an advancement in the epidemiological investigation of this zoonotic disease.

Management of nontuberculous mycobacterial lymphadenitis in a tertiary care children's hospital: A 20year experience.

PURPOSE: Nontuberculous mycobacteria are uncommon cause of chronic cervicofacial lymphadenitis in healthy children. We describe clinical features and management strategies of cervicofacial nontuberculous mycobacterium lymphadenitis in a tertiary pediatric hospital. METHODS: Retrospective analysis of medical records of children discharged from 1992 to 2014 with a diagnosis of cervicofacial nontuberculous mycobacterium was made. Diagnosis certainty was based on microhistological investigations. Clinical stage was evaluated according to lymph node size and presence of fistulas. Successful therapy was defined by the regression of the lymph node enlargement (>75%) or complete surgical excision without relapse. RESULTS: Cervicofacial nontuberculous mycobacterium was diagnosed in 33 patients. Complete excision was performed in 73% of cases primarily observed in our hospital, while 83% of those referred from other hospitals required further surgical treatment. No case of relapse was observed after one year of follow-up. CONCLUSIONS: We recommend surgical approach as the first therapeutic option in the management of cervicofacial nontuberculous mycobacterium lymphadenitis. LEVELS OF EVIDENCE: Prognosis and Retrospective Study - Level II.

Varied spectrum of clinical presentation and mortality in a prospective registry of visceral leishmaniasis in a low endemicity area of Northern Italy.

BACKGROUND: Visceral Leishmaniasis (VL) is endemic in 88 countries, in areas of relatively low incidence with a relevant proportion of immune suppressed patients clinical presentation, diagnosis and management may present difficulties and pitfalls. METHODS: Demographic data, clinical, laboratory features and therapeutic findings were recorded in patients identified by a regional VL disease registry from January 2007 to December 2010. RESULTS: A total of 55 patients (36 adults mean age 48.7 years, 19 children median age 37.5 months) were observed presenting with 65 episodes. All childen were immunocompetent, whereas adults affected by VL included both immunocompetent (n°17) and immunesuppressed (n°19) patients. The clinical presentation was homogeneous in children with predominance of fever and hepato-splenomegaly. A wider spectrum of clinical presentations was observed in immunocompromised adults. Bone marrow detection of intracellular parasites (Giemsa staining) and serology (IFAT) were the most frequently used diagnostic tools. In addition, detection of urinary antigen was used in adult patients with good specificity (90%). Liposomal amphotericin B was the most frequently prescribed first line drug (98.2% of cases) with 100% clinical cure. VL relapses (n°10) represented a crucial finding: they occurred only in adult patients, mainly in immunocompromised patients (40% of HIV, 22% of non-HIV immunocompromised patients, 5,9% of immunocompetent patients). Furthermore, three deaths with VL were reported, all occurring in relapsing immunocompromised patients accounting for a still high overall mortality in this group (15.8%). CONCLUSIONS: The wide spectrum of clinical presentation in immunesuppresed patients and high recurrence rates still represent a clinical challenge accounting for high mortality. Early clinical identification and satisfactory treatment performance with liposomal amphotericin B are confirmed in areas with low-level endemicity and good clinical standards. VL needs continuing attention in endemic areas where increasing numbers of immunocompromised patients at risk are dwelling.