Michel Laverdière

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Azoles are the mainstay of oral therapy for aspergillosis. Azole resistance in Aspergillus has been reported infrequently. The first resistant isolate was detected in 1999 in Manchester, UK. In a clinical collection of 519 A. fumigatus isolates, the frequency of itraconazole resistance was 5%, a significant increase since 2004 (p<0.001). Of the 34(More)
It has been known for centuries that sleep and epilepsy have strong reciprocal influences. This is true for all kinds of epilepsies, although the nature of this influence varies quite markedly for each type. This extensive literature cannot be reviewed here, but some recent applications of these early studies will be given.
The AMMI Canada Guidelines document 'The use of antiviral drugs for influenza: A foundation document for practitioners', published in the Autumn 2013 issue of the Journal, outlines the recommendations for the use of antiviral drugs to treat influenza. This article, which represents the first of two updates to these guidelines published in the current issue(More)
Spindles of 12-14 Hz were recorded in the hippocampus of 13 epileptics during sleep. This activity was more prominent in patients in whom the hippocampal region was not the site of the primary focus and in whom the electrical activity was normal during wakefulness. Spindles were more numerous during stage 2 non-rapid-eye-movement sleep, especially in(More)
Invasive fungal infections cause significant morbidity and mortality in patients with concomitant underlying immunosuppressive diseases. The recent addition of new triazoles to the antifungal armamentarium has allowed for extended-spectrum activity and flexibility of administration. Over the years, clinical use has raised concerns about the degree of drug(More)
Acute encephalitis caused by Toxoplasma gondii was diagnosed in ten patients in Belgium, the U.S.A., and Canada. None had underlying conditions usually associated with toxoplasmosis. Three had evidence of extraneural infection at necropsy. Nine patients died. Only two of the patients had a history of homosexuality, and one was a heroin addict. Five were(More)
Penicillin--"tolerant" Staphylococcus aureus strains are resistant to the lethal action of penicillins, but are inhibited by normal (low) concentrations. They are deficient in autolytic enzyme activity which appears to be necessary for bacteriolysis and the lethal action of penicillins. This "deficiency" is caused by a large excess of an inhibitor of(More)
This article represents the second update to the AMMI Canada Guidelines document on the use of antiviral drugs for influenza. The article aims to inform health care professionals of the increased risk for influenza in long-term care facilities due to a documented mismatch between the components chosen for this season's vaccine and currently circulating(More)
A 22 year-old man died from multiple cerebral abscesses due to Petriellidium boydii 4 1/2 months after an episode of near drowning. The autopsy showed dissemination to heart and kidney. This patient had no immunocompromising disease but was treated with corticosteroids. The treatment of this condition with ventricular shunting and amphotericin B is(More)