Abstract:
PURPOSE: An attenuated Streptococcus pneumococcus containing mutant pep27 is provided to ensure excellent vaccine effect and to minimize inconvenience. CONSTITUTION: An attenuated Streptococcus pneumococcus contains mutant pep27 gene. The pep27 gene encodes an amino acid of pep27 peptides of sequence number 1. A method for preparing the attenuated Streptococcus pneumococcus comprises a step of deleting the pep27 gene in chromosome DNA. A vaccine composition for preventing or treating Streptococcus pneumococcus infectious diseases contains the Streptococcus pneumococcus strain. The vaccine composition immunizes by a serotype-independent method.
Abstract:
PURPOSE: A vaccine using damaged mutant of spr0526, spr0527 and spr0528 and a method for diagnosing Streptococcus pneumonia are provided to apply to all Streptococcus pneumonia and initially defense from the Streptococcus pneumonia. CONSTITUTION: A Streptococcus pneumonia mutant has damaged spr0526, spr0527, and spr0528. A deleted site is from 534172 to 535222 of the total Streptococcus pneumonia. A primer set for manufacturing DNA for inducing mutation is denoted by sequence number 2-7. The mutant of Streptococcus pneumonia is introduced. The Streptococcus pneumonia is d39.