Transmission of milk borne disease: –

1. Infection of milk directly from the cow: –

• The causative organisms enter the milk through the mammary glands or through faecal contamination and may cause a diseased condition in persons who consume the milk.
• Examples are Bovine tuberculosis Undulant fever or Malta fever etc.

2. Infection from man to cow and then to milk:-

• These diseases are human, but can become established in the cow’s udders.
• Examples are Septic soar throat, Scarlet fever, Diphtheria etc.

3. Direct contamination of milk by human being: –

• These disease may be transmitted to the milk by direct contamination through human contact, either by carriers or patients.
• Examples Septic Soar throat, scarlet fever, Typhoid fever, Paratyphoid fever, Dysentery, gastroenteritis, Diphtheria etc.

4 Indirect contamination of milk by human being: –

• It enter the milk through contaminated bottles or other utensils, water supply, insects and dust.