10. Salmonella Flashcards
What 2 species are 90% related to E.coli?
Shigella & Salmonella
What diseases does Salmonella spp. cause?
Food poisoning, typhoid
How does Salmonella cause disease?
Invasion, localised or systemic, T3SS
Features of Salmonella?
- Highly related (90%) to E. coli
- Gram neg
- Motile
- Facultative
- Also fairly related to Shigella
Which type of Salmonella covers all the traditional species?
Salmonella enterica
What is the most common strain of Salmonella in developed countries?
Salmonella enterica Serovar Enteritidis
What condition does S. enterica cause?
Gastroenteritis (Salmonellosis)
What are the symptoms of salmonellosis?
Nausea, vomiting, pain, diarrhoea, fever
Salmonella is a leading cause of foodborne disease - 2nd only in Western World to?
Campylobacter
What food is Salmonella particularly associated with?
Poultry & eggs
Classification of Salmonella?
> 2,500 serovars (based on O and H antigens)
1,500 in S. enterica enterica
2 types of Salmonella enterica?
Typhoidal and non-typhoidal
2 types of typhoidal Salmonella?
S. typhi and S. paratyphi
2 types of non-typhoidal Salmonella?
S. typhimurium and S. enteritidis
What disease does typhoidal Salmonella cause?
Typhoid & paratyphoid fevers (humans)
What disease does non-typhoidal Salmonella cause?
Gastroenteritis & extraintestinal (humans & animals)
Most foodborne salmonellosis results in?
Gastroenteritis