TABLE 1.

Genotypic and virulence test results^a

Strain	% DNA-DNA hybridization with:		Virulence in mice
	S. pneumoniae CCUG 28588T	S. pseudopneumoniae CCUG 49455T	Death/survival statusb	Result for spleen samples		Result for peritoneal swabbing
				Imprints	Swabbing
S. pneumoniae CCUG 28588T	100	48	D 24	+	+	+
S. pseudopneumoniae CCUG 49455T	37	100	S	−	−	−
S. pseudopneumoniae IBS-370	47	90	D 36	+	+	+
Additional S. pseudopneumoniae clinical strainsc			D 36	+	+	+

^aAll strains had the ply gene.

^bD 24, death after 24 h; S, survival; D 36, death after 36 h.

^cCCUG 48465, CCUG 50866, CCUG 50867, CCUG 50868, CCUG 50869, CCUG 50870, and CCUG 50871, described by Arbique et al. (1).