This is old news and fluff. For a less fluffy article:
Increased incidence of traffic accidents in Toxoplasma-infected military drivers and protective effect RhD molecule revealed by a large-scale prospective cohort study.
For those with too little time to read the actual paper, here's the results summary:
We confirmed, using for the first time a prospective cohort study design, increased risk of traffic accidents in Toxoplasma-infected subjects and demonstrated a strong protective effect of RhD positivity against the risk of traffic accidents posed by latent toxoplasmosis. Our results show that RhD-negative subjects with high titers of anti-Toxoplasma antibodies had a probability of a traffic accident of about 16.7%, i.e. a more than six times higher rate than Toxoplasma-free or RhD-positive subjects.
In case I missed it, did that study control for location? I know that the other study stated that it did not have much (if any) background information on the candidates, but did say that infection rates for the parasite are higher in villages and small towns. I think that this is a significant lurking variable in any traffic accident analysis, and needs to be considered: In my experience, rural folk are less exposed to some of the more "creative" driving situations than those who live closer in.
Increased incidence of traffic accidents in Toxoplasma-infected military drivers and protective effect RhD molecule revealed by a large-scale prospective cohort study.
Look here: http://www.biomedcentral.com/1471-2334/9/72
Courtesy of the hard science sub-reddit.
For those with too little time to read the actual paper, here's the results summary:
We confirmed, using for the first time a prospective cohort study design, increased risk of traffic accidents in Toxoplasma-infected subjects and demonstrated a strong protective effect of RhD positivity against the risk of traffic accidents posed by latent toxoplasmosis. Our results show that RhD-negative subjects with high titers of anti-Toxoplasma antibodies had a probability of a traffic accident of about 16.7%, i.e. a more than six times higher rate than Toxoplasma-free or RhD-positive subjects.