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Diseases » Vibrio vulnificus » Prevalence

Prevalence and Incidence of Vibrio vulnificus

Incidence (annual) of Vibrio vulnificus:

less than 300 cases in 1988-1995 (DBMD) ... see also overview of Vibrio vulnificus.

Incidence Rate:

approx 1 in 906,666 or 0.00% or 300 people in USA [Source statistic for calcuation: "less than 300 cases in 1988-1995 (DBMD)" -- see also general information about data sources]

Incidence extrapolations for USA for Vibrio vulnificus:

299 per year, 24 per month, 5 per week, 0 per day, 0 per hour, 0 per minute, 0 per second. [Source statistic for calculation: "less than 300 cases in 1988-1995 (DBMD)" -- see also general information about data sources]

Prevalance of Vibrio vulnificus:

Relative Frequency of Disease: No major outbreaks of illness have been attributed to this organism. Sporadic cases occur frequently, becoming more prevalent during the warmer months. (Source: FDA Bad Bug Book) ... Between 1988 and 1995, CDC received reports of over 300 V. vulnificus infections from the Gulf Coast states, where the majority of cases occur. (Source: excerpt from Vibrio vulnificus (General): DBMD)

Prevelance of Vibrio vulnificus discussion:

Vibrio vulnificus (General): DBMD (Excerpt)

V. vulnificus is a rare cause of disease, but it is also underreported. Between 1988 and 1995, CDC received reports of over 300 V. vulnificus infections from the Gulf Coast states, where the majority of cases occur. There is no national surveillance system for V. vulnificus, but CDC collaborates with the states of Alabama, Florida, Louisiana, Texas, and Mississippi to monitor the number of cases of V. vulnificus infection in the Gulf Coast region. (Source: excerpt from Vibrio vulnificus (General): DBMD)

Vibrio vulnificus: DBMD (Excerpt)

An average of 40 culture-confirmed cases, 35 hospitalizations, and 12 deaths are reported each year from the Gulf Coast region (reporting states are Alabama, Florida, Louisiana, Mississippi, and Texas). Nationwide, there are as many as 95 cases (half of which are culture confirmed), 85 hospitalizations, and 35 deaths. (Source: excerpt from Vibrio vulnificus: DBMD)

Outbreaks of Vibrio vulnificus:

In a survey of cases of V. vulnificus infections in Florida from 1981 to 1987, Klontz et al. (Annals of Internal Medicine 109:318-23;1988) reported that 38 cases of primary septicemia (ingestion), 17 wound infections, and 7 cases gastroenteritis were associated with the organism. Mortality from infection varied from 55% for primary septicemia cases, to 24% with wound infections, to no deaths associated with gastroenteritis. Raw oyster consumption was a common feature of primary septicemia and gastroenteritis, and liver disease was a feature of primary septicemia.

Selected Outbreaks: Sporadic cases continue to occur all year, increasing in frequency during the warmer months.

MMWR 45(29):1996

Of all foodborne infectious diseases, infection with Vibrio vulnificus is one of the most severe; the case-fatality rate for V. vulnificus septicemia exceeds 50% (1,2). Cases are most commonly reported during warm-weather months (April-November), and often are associated with eating raw oysters. During April 1993-May 1996, a total of 16 cases of V. vulnificus infection were reported in Los Angeles County.

MMWR 42(21):1993

Vibrio vulnificus is a gram-negative bacterium that can cause serious illness and death in persons with preexisting liver disease or compromised immune systems. From 1981 through 1992, 125 persons with V. vulnificus infections, of whom 44 (35%) died, were reported to the Florida Department of Health and Rehabilitative Services (HRS). This report summarizes data on these cases and presents estimates of the at-risk population in Florida. Morbidity and Mortality Weekly Reports

For more information on recent outbreaks see the CDC. (Source: FDA Bad Bug Book)

About prevalence and incidence statistics:

The term 'prevalence' of Vibrio vulnificus usually refers to the estimated population of people who are managing Vibrio vulnificus at any given time. The term 'incidence' of Vibrio vulnificus refers to the annual diagnosis rate, or the number of new cases of Vibrio vulnificus diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.


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