3.1 Factors that increase the risk of infection

In addition to the general risks that are addressed by the biosafety measures described in Chapter 2, the low-risk TB laboratory may also face the following challenges, all of which increase risks:

  • bench spaces may be used improperly;
  • specimen containers may leak;
  • specimens manipulated carelessly may lead to subsequent aerosolization;
  • specimens may be shaken vigorously;
  • ventilation or illumination may be poor. 

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