Dear Professor Kwan,
I am writing to ask about the serotype of Salmonella. As you said and drew in class, the cross protection between Salmonella Pullorum and Enteritids are from the antibodies toward O4, O5, O12 antigen. As the picture shown below:
I want to ask about the serotype, as I read about the supplementary notes posted on blackboard “Tracing the Origin of Salmonella Outbreak”, it showed that the antigen of Salmonella Pullorum , Gallinarumor and Enteritids are having O9 and O12 antigen. Is that those Salmonella consist of O9 & O12?
Thank you so much for your kind attention.
Answer:
Yes, you are right. I have got them mixed up. The important point here is that S. Pullorum, S. Gallinarum and S. Enteritidis shared the same O antigens (O9:O12), and their antigens are not identical to those of S. Typhimurium (O4:O5:O12).
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