Not ture about El Tor biotype of vibrio cholerae?
**Core Concept**
The El Tor biotype of Vibrio cholerae is a pathogenic strain that causes cholera, a diarrheal disease characterized by profuse watery stools and dehydration. The El Tor biotype is known for its ability to produce a mild to moderate form of the disease, but it can still lead to severe dehydration and even death if left untreated.
**Why the Correct Answer is Right**
The El Tor biotype of Vibrio cholerae has a unique characteristic that distinguishes it from the classical biotype: it has a longer incubation period. This is due to the El Tor biotype's ability to cause a milder infection, which allows it to evade the host's immune system and replicate more slowly. The El Tor biotype also produces a lower amount of cholera toxin, which is responsible for the profuse diarrhea associated with cholera.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not true about the El Tor biotype of Vibrio cholerae. The El Tor biotype is actually known for its ability to produce a mild to moderate form of the disease, not a severe form.
* **Option B:** This option is not true about the El Tor biotype of Vibrio cholerae. The El Tor biotype has a longer incubation period, not a shorter one.
* **Option D:** This option is not true about the El Tor biotype of Vibrio cholerae. The El Tor biotype produces a lower amount of cholera toxin, not a higher amount.
**Clinical Pearl / High-Yield Fact**
The El Tor biotype of Vibrio cholerae is known for its ability to cause a mild to moderate form of the disease, but it can still lead to severe dehydration and even death if left untreated. This highlights the importance of prompt treatment and diagnosis in cases of suspected cholera.
**Correct Answer:** B.