non-virulent

the lab worked with a non-virulent strain of the virus for research purposes.

public health officials confirmed the outbreak involved a non-virulent form of the bacteria.

vaccines against non-virulent strains can still provide immunity.

researchers chose a non-virulent variant to test the new drug's efficacy.

the attenuated virus used in the vaccine is non-virulent.

testing with a non-virulent agent minimizes risk to the subjects.

the genetically modified virus was rendered non-virulent.

they studied the non-virulent version to understand its behavior.

the goal was to create a non-virulent but immunogenic strain.

even a non-virulent infection can cause discomfort and require treatment.

the study focused on the characteristics of a non-virulent bacterium.