4.2.1 Specimens for Which There is Limited Information

Situations exist when the available information is insufficient to perform an appropriate risk assessment, e.g., with clinical specimens or epidemiological samples collected in the field.  In these cases, it is prudent to take a conservative approach to specimen manipulation, including:

  • universal precautions;
  • barrier protections (gloves, gowns, eye protection); and
  • basic laboratory containment (see Biosafety Level 2).