Letter: group-Y meningococcal disease.
D006801:Humans; D007709:Klebsiella / Q000302:isolation & purification; D008589:Meningococcal Infections; D009345:Neisseria meningitidis / Q000302:isolation & purification; D011014:Pneumonia / Q000150:complications; D013296:Streptococcus pneumoniae / Q000302:isolation & purification