<P> Conditions indicating additional precautions: </P> <Ul> <Li> Prion diseases (e.g., Creutzfeldt--Jakob disease) </Li> <Li> Diseases with air - borne transmission (e.g., tuberculosis) </Li> <Li> Diseases with droplet transmission (e.g., mumps, rubella, influenza, pertussis) </Li> <Li> Transmission by direct or indirect contact with dried skin (e.g., colonisation with MRSA) or contaminated surfaces or any combination of the above . </Li> </Ul> <Li> Prion diseases (e.g., Creutzfeldt--Jakob disease) </Li> <Li> Diseases with air - borne transmission (e.g., tuberculosis) </Li>

When should health care workers who are in direct contact with patients follow standard precautions