Infection control - bodily fluids

What other factors may contribute to the likelihood of any harm occurring?

Pupils or staff who are infected with blood-borne viruses e.g. hepatitis B virus (HBV), hepatitis C, hepatitis D, Human Immunodeficiency Virus (HIV) :

Poor first aid arrangements :

No proper infected waste disposal system :

History of drug use on school site :

Pupils with behaviour problems and who are unpredictable who could bite, scratch or spit :