Epidemiology

Epidemiology:

Sources of infection:

1. Infected lesions:

Large numbers of viable staphylococci are shed in the atmosphere via pus and dried exudates from the infected wound, skin lesions, burns and sputum of bronchopneumonia patients.

2. Healthy carriers:

Without doing any damage, Staphylococci can grow on moist skin and nostrils of numerous healthy persons. From such sites organisms are shed into the atmosphere.

3. Animals:

Staphylococci obtain disseminated from the animals and might cause infections in human. For illustration, milk from a dairy cow with mastitis might be contaminated with enterotoxigenic staphylococci and later might cause food poisoning.

Mode of transmission:

Direct contact with the infected and contaminated substance is a significant mode of spread. Air borne dissemination might also take place. Cross infection is a significant technique of spread of Staphylococci in hospitals and scrupulous hand washing is necessary in preventing infections. Food handlers might introduce enterotoxin generating strains into food. New born babies get staphylococci from their mother, nurse or atmosphere. Nursing mothers might get the staphylococci from babies and build up mastitis.

 

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