Which of the following is true of cholera-(
Ans. is 'b' i.e., Causes secretory diarrhoea . Recent epidemic was due to non-01 V.cholerae (NAG vibrio) in 1992. This strain was designated serovar 0-139 (0-139 Bengal). . Enterotoxin (Cholera toxin) causes watery diarrhea by acting directly on secretory mechanism through cAMP. . Cholera is due to exotoxin (cholera toxin). Cholera vibrios also possess lipopolysaccharide (endotoxin), but it has no role in pathogenesis. . "Vibriocidal antibodies in serum have been associated with protection against colonization and disease"
Recent epidemic was due to classical type
Causes secretory diarrhoea
Caused by endotoxin
Vibriocidal antibodies correspond to susceptibility