This document discusses various milk borne pathogens and diseases. It identifies sources of pathogens in milk such as the udder, milking equipment, and poor hygiene practices. Common bacteria found in milk include Salmonella, Listeria, E. coli, and Campylobacter. Molds like Aspergillus and Penicillium can also contaminate milk and produce mycotoxins under certain conditions. Diseases transmitted by contaminated milk include brucellosis, bacillary dysentery, and diphtheria. Brucellosis is caused by Brucella bacteria and causes flu-like symptoms or chronic complications. Bacillary dysentery is caused by Shigella bacteria and has similar

1. Different Milk Borne
Pathogens and Diseases
Dinah Faye Miraflor Indino
Bachelor of Science in Food Technology

2. a. Milk is sterile at secretion in the
udder but is contaminated by bacteria
even before it leaves the udder.
b. Further infection of the milk by
microorganisms can take place during
milking, handling, storage, and other
pre-processing activities.

4. Sources of pathogens
1. Udder
2. Environment
3. Milking machine and equipments
4. Handler
5. Poor hygienic practice before and
after milking

5. Common pathogens found in Milk
1. Salmonella sp Bacillus cereus
2. Listeria monocytogenes
3. Yersinia enterocolitica
4. Salmonella spp.
5. Escherichia coli O157:H7
6. Campylobacter jejuni

6. Other pathogens found in Milk
1. Mycobacterium bovis
2. Brucella sp
3. Coxiella burneti
4. Bacillus anthracis
5. Clostridium botulinum
6. Corynebacterium diphtheriae

7. Molds in milk
1. Aspergillus
2. Fusarium
3. Penicillium
Hazard starts when condition permits this molds is
capable of forming mycotoxins.

8. Milk borne diseases and illnesses
1. Brucellosis
Brucella spp being transmitted from goats to humans either
through direct contact or through the milk of the infected animal.
Particularly since the appearance and taste of the milk are
rarely affected by the presence of the bacteria. Once transmitted to
humans.
Brucella is responsible for a type of granulomatous hepatitis
or an acute febrile illness which can, at times, persist and progress to
a chronically incapacitating disease with serious complications

9. 2. Bacillary dysentery
Bacillary dysentery (Enterocolitis or Shigellosis)
caused by:
Shigella dysentery, Shigella shiga, Shigella sonnei
& Shigella flexneriae.
Sources of contamination like Salmonellosis.

10. 2. Diptheria
Infection caused by the bacterium Corynebacterium
diphtheriae.
Symptoms often come on fairly gradually beginning with a
sore throat and fever. In severe cases a grey or white patch
develops in the throat. This can block the airway and create a
barking cough as in croup. The neck may swell in part due to
large lymph nodes.
Complications may include myocarditis, inflammation of
nerves, kidney problems, and bleeding problems due to low blood
platelets. Myocarditis may result in an abnormal heart rate and
inflammation of the nerves may result in paralysis.
An adherent, dense, grey pseudomembrane
covering the tonsils is classically seen in
diphtheria