What are the different types of vibrio cholera?

There are two biotypes of *Vibrio cholerae*:

1) O1 biotype: This is the most common type of *V. cholerae* and the one that causes the majority of cholera cases worldwide. It is further divided into two serogroups: Ogawa and Inaba.

2) O139 biotype: This is a less common type of *V. cholerae* that was first identified in 1992. It is also known as the Bengal strain and has caused several outbreaks in Asia.

In addition to these two biotypes, there are also non-O1/non-O139 strains of *V. cholerae*:

- These strains do not produce the cholera toxin and do not cause the severe symptoms associated with cholera. However, they can still cause diarrhea and other gastrointestinal symptoms.

Some of the other species of *Vibrio* that can cause disease include:

1) *V. parahaemolyticus*: This species is commonly found in coastal waters and can cause gastroenteritis after eating raw or undercooked seafood.

2) *V. vulnificus*: This species is also found in coastal waters and can cause a serious and sometimes fatal infection known as "flesh-eating disease."

3) *V. alginolyticus*: This species is commonly found in marine environments and can cause gastroenteritis and wound infections.

4) *V. fluvialis*: This species is found in freshwater environments and can cause gastroenteritis and wound infections.