Odds of fainting low at car flu clinics LOUISVILLE, Ky., July 5 (UPI) -- U.S. researchers say there is no reason to be concerned that people might faint behind the wheel after receiving influenza vaccinations at drive-thru clinics. Ruth Carrico, associate professor at the University of Louisville School of Medicine, said critics of the drive-thru clinics had pointed to fainting risks and subsequent car crashes as reasons for concern. Carrico and University of Louisville colleagues Dr. W. Paul McKinney, Timothy Wiemken and John Myers said since the beginning of an annual drive-thru immunization program initiated 1995 at the University of Louisville Hospital, more than 50,000 doses of the influenza vaccine have been administered. But the study, published in the Journal of Emergency Management, found there were no reports of fainting episodes or related auto accidents. The researchers reviewed medical and legal literature and made statistical inferences about the likelihood of fainting following drive-thru immunizations. "We found a person's chance of fainting during a drive-thru vaccination is less than the probability of being struck by lightning," Carrico said in a statement.