Inter-annual variation in the proportions of African wild dogs showing evidence of exposure to (a) rabies virus; (b) canine distemper virus; (c) canine parvovirus; (d) canine coronavirus; (e) <i>Ehrlichia canis</i>; and (f) <i>Neospora caninum</i>.

<p>Error bars indicate exact binomial confidence intervals. Figures along the tops of the graphs indicate the numbers of samples screened in each year; the sums of these figures exceed the denominators in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0030099#pone-0030099-t001" target="_blank">Table 1</a> because they include samples from wild dogs immobilized multiple times.</p

Changes in the serological status of wild dogs which were sampled twice, on dates 2.5–38 months apart.

<p>Animals which seroconverted were considered negative when first sampled, but positive subsequently, or <i>vice versa</i>. None of these animals was vaccinated against any pathogen.</p

Spatial distribution of pathogen exposure among wild dogs and domestic dogs.

<p>Maps show, for each pathogen, the sampling locations for animals with (filled symbols) and without (open symbols) evidence of exposure. Shading indicates commercial ranch land. Note that multiple animals were sampled at some locations.</p

Density of domestic dogs experienced by 57 African wild dogs, in 10 packs living mainly on either community lands or commercial ranches.

<p>Data show the mean (and SD) estimated density of domestic dogs at points where wild dogs were located by aerial radio-telemetry in the 12 months prior to sampling for pathogen exposure. Figures along the top of the graphs indicate the numbers of wild dogs sampled from each pack (over periods of 1–7 years).</p

Results of multivariable logistic regression models describing predictors of wild dog exposure to six canine pathogens.

<p>All models also include pack identity as a random effect. For risk factors measured as continuous variables, odds ratios describe the effects of a doubling in value.</p

Proportions of wild dogs and domestic dogs with serological evidence of exposure to six canine pathogens on their most recent sampling date.

<p>None of these animals had any history of vaccination to any pathogen.</p

Weekly numbers of California sea lions stranding due to leptospirosis

Included are the number of California sea lions stranding due to leptospirosis (LeptoStrands) in each week (Week) for four 2.5 year (Year) eras. The four eras are 1984-1986, 1988-1990, 1991-1993, and 2004-2006, with each beginning in the 24th week to reflect a June 17 start date