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Foodborn pathogen (BACTERIA (Campylobacter Jejuni (Morphology
-spiral-…
Foodborn pathogen
BACTERIA
Campylobacter Jejuni
Morphology
-spiral- shape, non- spore forming.
-gram negative microaerophilic
-commonly found in animal traces.
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Symptoms
-abdominal pain😩, diarrhea(sometime bloody), : fever and nausea 😵
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Mode of transmission
*consumption of contaminated food or water directly contact with infected animal including pets.
Clostridium Botulinum
Morphology
gram +ve, rod shape, anerobic.
spore formation,.no time bacterium.
Diagnosis
Take blood, stool or gastric secretion sample.
Mode of transmission
*injection of inadequately cooked food or processed or refrigerated foods in which toxin particularly canned and alkaline foods.
Symptoms
*double vision, droopy eyelids, trouble speaking and swallowing and difficult to breath.
Growth requirements.
*3-48°c , ph 4.6- 8.9
Clostridium Perfringens
Morphology
+ve, spore formation.
anaerobic, rod shape bac that produce an enterotoxin which released by intes6.
Growth requirement.
*tem- 15-55°c, ph 5-9
Symptoms
*abdominal cramps, watery, diarrhea.
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Escherichia coli 0157:H7
Symptoms
*diarrhea that often is bloody, nausea, fever (37.7- 38.3°c), loss of appetite and vomiting.
Mode of transmission
consuming contaminated water, raw milk, uncooked vegetables or fruits.
person to person
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Morphology
-gram negative, rod shape (bacilli) bacterium, toxic forming aerobic.
Salmonella
Morphology
*gram negative, non -spore forming for.
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Symptoms
*stomach pain, diarrhea, nausea, fever, headache. Appear 6 to 48 hours.
Shigella
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Growth requirement: Tem- 10- 40 c, pH- below 4-5
Morphology: gram negative non spore forming, facultative anaerobic, rod shape bacteria.
Mode of transmission: contaminated food or water contect with infected objective or sexsual contect.
Symptoms: diarrhea, vomitting, abdominal pain, and fever.
Staphylococcus Aureus
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Growth requirement: Tem- 4 - 46 C, pH- 4.8-8.0
Morphology: gram positive, facultative aerobic spherical bacteria, produce a very heat stable toxin.
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Symptoms: several abdominal pain, diarrhea, nausea dehydration and fever.
Streptococcus Aureus
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Growth requirement: Tem- 4 -46 C, pH- 4.8-8.0
Morphology: gram positive, appear grape like cluster,
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Symptoms: several abdominal pain, diarrhea, nausea dehydration and fever.
Listeria Monocytogenes
Growth requirement: Tem- 45 - 1 c, pH- 4.5-9.6
Mode of transmission: direct contact with infections material or soil contaminated with infection animal feces.
Symptoms: abdominal pain, diarrhea, nausea, fever and headache.
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FUNGAI
MOLD
Monilia
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cause brown rot of fruits, red bread moulds.
Mucor
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the spore smooth,regular, and borne with sporangium.
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Gibberella
produce extensive mycelium that is cottony in culture with tinges of pink, purple or yellow.
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conidia: canoe shape,born single or in chains.
Penicillium
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color of food, blue to green-blue.
widespread in soil, dust, air and etc.
found in bread, cakes, fruits and preserves.
important in making cheese, and production of antibiotic (penicillin)
Aspergillus
prduce septate mycelia, some aflatoxins, ochratoxin.
found in cake, fruits and vegetables.
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conidia: one called, globose, and variously colored in mass
Sclerotinia
produce long,slender, pigmented, and conidiophores.
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also refer to crown rot, stem rot, cottony rot, watery soft rot, drop and blossom blight.
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Cephalothecium
produce mycelium that bear long,slender and simple conidiophores.
conidia: single, apically, sometime group of chain.
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YEAST
Debaryomyces
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found in the surface of spoilage of food such as pickle, sausage, wine, fresh and cured meats.
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PARASITE
Parasite Worms
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Cestoda
Taenia spp.
human infected by consuming contaminated food and water, direct hand, and fecally contaminated vegetable.
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symptoms: abdominal pain, diarrhea, altered appetite, and constipation.
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Protozoan parasite
Giardia lambia
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frequent method of infection is by consuming contaminated food or water and also through hand-to-mouth transmission.
symptoms: abdominal cramp, diarrhea, gas and nausea.
Toxoplasma gondi
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symptoms: fever, headache, muscle pain,sore throat, and swollen lymph node.
infected by consuming raw or uncooked meat, from a blood transfusion or organ transplant, transplacental transmission from mother to fetus and by ingesting contaminated water, soil or vegetable.
obligated, intracellular, parasite protozoan that causes toxoplasmosis.
Entamoeba histolytica
symptoms: abdominal pain, fever, severe diarrhea, and vomiting.
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Cryptosporidium parvum
infected by, drinking untreated water,eating contaminated food.
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symptoms: watery diarrhea, stomach pain, dehydration, nausea, vomiting, fever,and weight loss.
cause Cryptosporidiosis, it is a diarrheal disease.
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VIRUSES
Rotavirus
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Human infected by ingestion of contaminated food or water and direct contact with contaminated surface and putting hand in the mouth.
symptoms: fever, stomach cramps, dehydration, vomiting and diarrhea.
Norwalk virus
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symptoms: nausea, vomiting, diarrhea, anorexia, low grade fever and malaise.
Hepatitis A virus
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Human is infected by eat or drink food or water that has been contaminated by feces, sexual practices oral-anal contact and does not wash hand properly after toilet and touch other object.
symptoms: sudden fever, jaundice, vomiting, abdominal discomfort, fatigue and bile in urine(dark urine).