Table 1

Medically important pseudomonads

rRNA homology group	Species	Disease associations
(I)Pseudomonas	P aeruginosa	Eye, skin, wound and burn infections Septicaemia and meningitis in immune compromised patients Urinary tract infection with bladder defects Respiratory tract infection in CF
	P fluorescens	Rare opportunist pathogens
	P putida	Rare opportunist pathogens
	P stutzeri	Rare opportunist pathogens
	P alcaligenes	Rare opportunist pathogens
	P pseudoalcaligenes	Rare opportunist pathogens
(IIa)Burkholderia	B cepacia	Respiratory tract infection in CF, opportunist
	B gladioli	Respiratory tract infection in CF, opportunist
	B multivorans	Respiratory tract infection in CF, opportunist
	B pseudamallei	Melioidosis
	B mallei	Glanders in horses and man
	B thailandensis	Saprophyte, ?opportunist
	B vietnamensis	Saprophyte, ?opportunist
(IIb) Ralstonia	R pickettii	Rare opportunist
(IIc)Oxalobacter	O formigenes	Absence in normal flora of children with CF predisposes to nephrolithiasis
(III)Comamonas	C acidovorans	Rare opportunist pathogens
	C testosteroni	Rare opportunist pathogens
(IV)Brevundimonas	B diminuta	Rare opportunist pathogens
	B vesicularis	Rare opportunist pathogens
(V)Stenotrophomonas	S maltophilia	Respiratory tract infection in CF, opportunist