7Thureen PJ, Moreland S, Rodden DJ, et al. Failure of tracheal aspirate cultures to define the cause of respiratory deteriorations in neonates [J]. Pediater Infect Dis J, 1993, 12:560-564.
8Weber MW, Mulhohhand EK, Greenwood BM. Respiratory syneytial virus infeetionin tropical and developing countries [J]. Trop Med Int Health, 1998, 3 (4): 268-280.
9Sato M,Saito R,Sakai T,et al.Molecular epidemiology of respiratory syncytial virus infections among children with acute respiratory symptoms in a community over three seasons[J].J Clin Microbiol,2005,43(1):36-40.
10Venter M,Madhi SA,Tiemessen CT,et al.Genetic diversity and molecular epidemiology of respiratory syncytial virus over four conse-cutive seasons in South Africa:identification of new subgroup A and B genotypes [J].J Gen Virol,2001,82:2117-2124.
