SALMONELLA

Salmonella is a bacterial pathogen associated with

FOOD POISONING

•Contaminated poultry_____ are among the most frequently implicated food vehicles of salmonellae

meat and eggs

Salmonellae are consistently reported to be among the leading international sources of

foodborne human disease

•Poultry products are often identified as prominent sources of _____ which cause human illness

salmonellae

Humans can also be infected with Salmonella via

handling live poultry

family of salmonella

Enterobacteriaceae

Salmonella 2 species

1. Salmonella enterica

2. Salmonella bongori

Salmonella enterica subspecies (6)

1. Salmonella enterica subspecies enterica

2. Salmonella enterica subspecies enterica serovar Enteritidis

3. Salmonella enterica subspecies enterica serovar Typhimurium

only subspecies associated with disease in warm blooded animals

Salmonella enterica subsp. enterica

Causes salmonellosis from consumption of raw meat

Salmonella enterica subspecies enterica serova enteritidis

Causes salmonellosis from contact with infected animals, pet reptiles/amphibians, eating contaminated meat/produce

Salmonella enterica subsp. enterica serovar typhimurium

is primarily found in the environment and in cold-blooded animals (poikilotherms, such as reptiles)

Salmonella bongori

salmonella morph

• straight

• non sporeforming rods

• gram negative

• NON-MOTILE

AGAR

1. SSA (salmonella-shigella agar)

2. XLD (Xylose Lysine Deoxycholate

•Develops colorless, transparent colonies with distinctive black centers

SSA

Produces pink colonies with a black center (hydrogen sulfide or H₂S production)

XLD

is a disease caused by S. Gallinarum

fOWL THYPOID

FOWL THYPOID

Salmonella gallinarum (Salmonella enterica subsp. enterica serovar Gallinarum)

fowl thypoid transmission

1. feco-oral route

2. wild birds

3. red mites (Dermanyssus gallinae)

•Biological vector of the bacteria (fowl thypoid)

Red mites (dermanyssus gallinae)

•Some copper-like color and enlargement of liver and spleen may be observed in acute form of the disease

fowl thypoid

•Necrotic spots on the gizzard, lungs and liver of infected bird may be seen

fowl thypoid

•Discoloration and deformed ova may be observed on adult birds

fowl thypoid

fatty degeneration of the heart

fatty thypoid

agar for fowl thypoid

1. Brilliant green agar

2. XLD

3. SSA

tx for fowl thypoid

1. amoxicillin

2. potentiated sulfonamides

3. tetracycline

4. fluoroquinolones

fowl thypoid most used vaccine

9R

PULLORUM DS IS AKA

BACILLARY WHITE DIARRHEA

PULLLORUM DS ETIOLOGY

sALMONELLA ENTERICA SUBSP. ENTERICA SEROVAR GALLINARUM BIOVAR PULLORUM

MOST IMPORTANT TRANMISSION METHOD FOR BACILLARY WHITE DS (PULLORUM)

vertical transmission

pasty vents

pullorum