Last edited 13 Sep 2021

Infection

Water safety in buildings, published by the World Health Organization in 2011, defines infection as:

  • ‘The entry and development or multiplication of an infectious agent in a host. Infection may or may not lead to disease symptoms (e.g. diarrhoea) (WHO, 2006b).’
  • ‘The entry and development or multiplication of an infectious agent in the body of humans and animals that may constitute a public health risk (WHO, 2005).
  • ‘The presence in the body of viruses or organisms, such as bacteria, protozoa, fungi or helminths, which multiply or develop, completing all or part of their lifecycle within the tissues of an animal or human host (infection may or may not lead to a disease state) (WHO et al., 1996).’

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