V cholerae , however, are pathogens of humans, capable of producing an enterotoxin. Treatment involves rapid intravenous fluid and electrolyte replacement. Without treatment, approximately 50 percent of those infected die. In fact, all serotypes are harmful to humans. S. typhi also produces a toxin that causes fever, nausea and diarrhea and may be fatal if not properly treated.
Treatment includes fluid and electrolyte replacement and possibly antibiotic therapy.
Acuteviral hepatitis may result in mild gatrointestinal disease, but is characterized primarily by inflammation and necrosis of the liver and jaundice. Hepatitis A infections are usually self limiting, resulting in a death rate of 0.60 percent, but may persist in immunocompromised populations. Post-infection treatment is difficult, unless caught prior to the onset of symptoms, but preventative vaccinations are now available. As for real numbers of those infected in Mexico, this figure is still not known and may not be calculated for many months. This is typical in situations such as this.