Table 2.
Results of characterization analyses for Streptoccocus mitis strains.
| Isolate ID | Type of Sample | lytA of OP specimen | Species isolated | Optochin | lytA of S. mitis isolate | Immunochro-matographic testing (BinaxNow) | Serotyping assays | Capsule visualization by Quellung using pneumococcal anti-serum | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Real-time PCR | Conventional PCR | Latex agglutination | ||||||||
| L006 | OP | Negative | S. mitis | Resistant | Negative | Negative | Serotype 1 | Serotype 1 | Serotype 1 | Weak visualization of capsule with serotype 1 anti-serum |
| L115 | OP | Negative | S. mitis | Resistant | Negative | Positive | Serotype 1 | Serotype 1 | Serotype 1 (weak reaction) | No visualization |
| L116 | OP | Negative | S. mitis | Resistant | Negative | Positive | Serotype 1 | Serotype 1 | Serotype 1 (weak reaction) | No visualization |
| L121 | OP | Positive (Ct = 31.19) | S. mitis | Resistant | Negative | Negative | Serotype 1 | Serotype 1 | Serotype 1 | Weak visualization of capsule with serotype 1 anti-serum |
| L164 | OP | Positive (Ct = 28.98) | S. mitis | Resistant | Negative | Negative | Serotype 1 | Serotype 1 | Serotype 1 (weak reaction) | Weak visualization of capsule with serotype 1 anti-serum |
Ct = cycle threshold.