Multiple simultaneous viral infections in infants with acute respiratory tract infections in Spain.

Antibiotic treatment and clinical diagnosis did not reach statistical significance. 4 Discussion In the literature, dual viral infection is found in 5–20% of infected patients ( Huang et al., 1998 , Weigl et al., 2000 , Ong et al., 2001 , Brandt et al., 1986 , Aberle et al., 2005 ), while multiple viral infections with three or more agents are considered anecdotal ( Jennings et al., 2004 , Huang et al., 1998 ).

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