Figure 2. Infectivity to larval vector ticks of four American robins exposed to nymphal deer ticks infected with Lyme disease spirochetes on days 0 and 186. Each observation was recorded on the day on which each xenodiagnostic test was complete.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.