Which Vibrio cholerae serogroup consistently produces cholera toxin?

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Multiple Choice

Which Vibrio cholerae serogroup consistently produces cholera toxin?

Explanation:
Cholera toxin production is tied to toxigenic strains of Vibrio cholerae that carry the ctxAB genes on the CTX phage, and the serogroup most consistently associated with this toxin is O1, which drives epidemic cholera. O1 strains reliably harbor the CTX phage and produce the toxin that causes the profuse watery diarrhea characteristic of cholera. While some O139 strains can also carry the toxin genes, the association is not as uniformly observed across all O139 isolates, making O1 the more consistently toxigenic group. The other serogroups listed, such as O75 and O141, are typically non-O1/non-O139 and do not reliably produce cholera toxin.

Cholera toxin production is tied to toxigenic strains of Vibrio cholerae that carry the ctxAB genes on the CTX phage, and the serogroup most consistently associated with this toxin is O1, which drives epidemic cholera. O1 strains reliably harbor the CTX phage and produce the toxin that causes the profuse watery diarrhea characteristic of cholera. While some O139 strains can also carry the toxin genes, the association is not as uniformly observed across all O139 isolates, making O1 the more consistently toxigenic group. The other serogroups listed, such as O75 and O141, are typically non-O1/non-O139 and do not reliably produce cholera toxin.

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