Microbiology Chapter 23

food poisining

is a form of intoxication caused by toxins produced by microbes present in the food

food infection

growth of pathogen in the human body after contaminated food has been eaten

gastroenteritis

any diseases causing inflammatin of the stomach or intestinal muscosa

by food handlers who carry the bacteria

How does Staphylococcus aureus get into food?

s. aureus can grow and produce toxins

What can be the outcome if the food that Staphylococcus aureus got into is not stored properly?

toxins

What causes the symptoms of Staphylococcus aureus food poisoning?

cramping, vomiting, nausea, diarrhea

What are the symptoms of Staphylococcus aureus?

dysentery

an infection of the intestines marked by severe diarrhea

Salmonella species

What causes salmonellosis

humans and animals

what is the reservoir of salmonellosis?

fever, diarrhea, and abdominal pain

what is the symptoms of salmonellosis?

cooking foods sufficiently, proper refrigeration and proper sanitary techniques

How can salmonellosis be prevented?

norovirus

What is the leading cause of foodborne illness?

humans

What is the reservoir for norovirus?

vibrio cholera

What causes cholera?

ingesting contaminated water

How is cholera transmitted?

rehydration

How is cholera treated?

Pathogenic strains of E. coli

enterotoxigenic, enteroinvasive, enteropathogenic, enterohemorrhagic

nonpathogenic strains of E. coli

Normally live in the human intestines without causing disease.

E. Coli Strain O157:H7

can develop hemolytic uremic syndrome (can cause kidney damage and failure), can cause neurological symptoms such as dizziness, seizure, and stroke, symptoms range from mild gastroenteritis with fever to blood diarrhea

Listeria monocytogenes

What causes listeriosis?

How listeriosis is transmitted

It is excreted in animal feces and is widely distributed in soil and water, sometimes found in dairy products (milk and soft cheeses) and deli foods.

fever, muscle aches, nausea, diarrhea

What are the symptoms of listeriosis?

proper cooking, refrigeration, antibiotics

How can listeriosis be prevented?

staphylococcus aureus,bacillus cereus,clostridum perfringens,

List the different microbes that can cause food poisoning

norovirus and hepatitis A

What are the two viruses that cause the majority of cases of viral foodborne illness?

mild fever, diarrhea, vomiting for 1 week, subclinical or flu-like, jaundice dark urine, and swollen liver

What are the symptoms of the two viruses that cause the majority of cases of viral foodborne illness?

clostridium difficile

acute diarrhea is caused by

Hepatitis A

foodborne, spread by fecal-oral route

Hepatitis B and C

bloodborne, drug users (needles)

botulism

canned goods, produces neurotoxins (can cause paralysis)

travellers diarrhea

watery diarrhea, low-grade fever, nausea, and vomiting, caused by E. coli

shigella dysenteriae

causes the most severe form of dysentery