Abstract:
:A conjugate vaccine against meningococcus A and C was prepared using the non-toxic mutant of diphtheria toxin CRM 197 as a carrier protein. Capsular polysaccharides of Neisseria meningitidis group A and C were hydrolysed and the resulting oligosaccharides were then coupled to CRM 197 in order to obtain conjugates with a carbohydrate content of 25-30%. The final vaccine that contained 11 micrograms of each oligosaccharide and 88 micrograms of CRM 197 was used to immunize mice and rabbits. After the preclinical studies which showed that the vaccine was safe and immunogenic in animal models, a pilot phase 1 clinical trial, blind versus placebo, was performed on adult volunteers. The difference between the incidence of adverse reactions associated with vaccine and placebo administration was not statistically significant. All the volunteers who received the vaccine had a significant increase in antibodies to group A and C meningococcal capsular polysaccharides after the first dose.
journal_name
Vaccinejournal_title
Vaccineauthors
Costantino P,Viti S,Podda A,Velmonte MA,Nencioni L,Rappuoli Rdoi
10.1016/0264-410x(92)90091-wsubject
Has Abstractpub_date
1992-01-01 00:00:00pages
691-8issue
10eissn
0264-410Xissn
1873-2518pii
0264-410X(92)90091-Wjournal_volume
10pub_type
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