defective interfering virus

defective interfering virus

[di′fek·tiv ‚in·tər‚fir·iŋ ′vī·rəs]
(virology)
A virus generated at the peak of an infection that can interfere with replication of the normal virus and may modify the outcome of the disease.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.