Microbiology If a quellungs test was done on a bacterial isolate, which one would you expect to be positive? A S.pneumoniae B Enterobacter C Haemophilus parainfluenza D C.diphtheriae 💡 Explanation If a quellungs test was done on a bacterial isolate, which one would you expect to be positive? ✓ Correct Answer: A. S.pneumoniae