R.S.V. infections and infant deaths.
D001991:Bronchitis / Q000382:microbiology; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008297:Male; D012136:Respiratory Syncytial Viruses / Q000302:isolation & purification*; D012140:Respiratory Tract Diseases / Q000401:mortality*