Which of the following statements regarding laboratory-acquired infections is true?

The statement that 80 percent of laboratory-acquired infections had an unknown route of exposure is supported by evidence from significant studies in the field. This highlights a critical aspect of biosafety: many infections that occur in laboratory settings do not have a clear or identifiable source. This lack of documented exposure routes underscores the unpredictability of certain pathogens and the importance of rigorous safety protocols in laboratories.

Understanding that a substantial proportion of laboratory-acquired infections involve unknown factors highlights the need for vigilance and comprehensive training in biosafety practices. It demonstrates the complexity of handling biological materials and reinforces the necessity for continuous improvement in laboratory safety measures to prevent potential infections that are not easily traced back to specific actions or exposures.