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  • Title: A myocarditis outbreak with fatal cases associated with adenovirus subgenera C among children from Havana City in 2005.
    Author: Savón C, Acosta B, Valdés O, Goyenechea A, Gonzalez G, Piñón A, Más P, Rosario D, Capó V, Kourí V, Martínez PA, Marchena JJ, González G, Rodriguez H, Guzmán MG.
    Journal: J Clin Virol; 2008 Oct; 43(2):152-7. PubMed ID: 18657472.
    Abstract:
    BACKGROUND: Among multiple causes of acute myocarditis, viral infection, especially that due to enteroviruses and adenoviruses, is the leading cause. In the summer 2005 an outbreak of a febrile syndrome accompanied by acute cardiac decompensation occurred in infants and young children in Havana City. Eleven patients had a rapid evolution of disease and there were 8 fatalities from cardiac failure secondary to myocarditis. OBJECTIVE: The aim of the present study was to determine the etiological agent responsible for this outbreak. STUDY DESIGN: Children admitted to the pediatric hospitals of Havana City from July 3 to August 2 with this clinical presentation were studied. Forty samples of necropsy tissue, cerebrospinal fluid, stools and serum were tested by molecular methods for 14 respiratory viruses, 6 herpesviruses and generic enteroviruses and flavirus and alfaviruses. Viral isolation was performed in A-549 cells. Isolated viruses were typed by sequence analysis. RESULTS: Adenovirus genome was detected in 6 of the 8 fatal cases-the lungs in 5 (63%) and the myocardium in 3 (37%). In two fatal cases, viral genome was detected in both lung and myocardium. Adenovirus was isolated in five fatal cases. In all three non-fatal cases, adenovirus genome was detected and adenovirus was isolated into two. Sequence analysis showed that adenovirus type 5 was the only isolate from fatal cases and adenovirus 1 the only isolate in non-fatal cases. No other viruses were found by PCR or isolation techniques. CONCLUSION: Adenovirus was the etiologic agent implicated in this myocarditis outbreak and adenovirus type 5 was associated with fatal outcome.
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