Control of tick infestations in wild roe deer (Capreolus capreolus) vaccinated with the Q38 Subolesin/Akirin chimera.

Ticks (Acari: Ixodidae) are considered to be the most important vectors of disease-causing pathogens in domestic and wild animals, and emerging and re-emerging tick-borne diseases (TBD) exert an enormous impact on them. Wild ungulates are hosts for a wide variety of tick species and tick-borne pathogens that affect human and animal health. Consequently, the control of tick infestations and tick-borne pathogen prevalence is essential in some regions. Acaricides and animal management or culling have been used for the control of tick infestations and TBD, but tick vaccines constitute the best alternative to reduce the impact of acaricides on tick resistance and the environment. Previous results of controlled vaccination trials have shown that the Q38 Subolesin/Akirin chimera containing conserved protective epitopes could be a candidate universal antigen to control multiple tick species infestations. Thus, vaccination trials are necessary to validate these results under field conditions. In this study, we characterized the effect of Q38 vaccine on a wild population of European roe deer (Capreolus capreolus) in the Andalusian roe deer Reference Station (Junta de Andalucía, Cádiz, Spain). In this location, roe deer suffer especially severe parasitic conditions in some periods and commercial pesticides and ixodicides that are authorized to control ticks without specificity are frequently applied in the field, posing a threat to the environment. Animals vaccinated over a three-year period showed an antibody response to the vaccine antigen and a reduction in tick infestations by multiple species including Hyalomma marginatum, H. lusitanicum, Rhipicephalus bursa and Ixodes ricinus previously identified in roe deer, when compared to untreated controls. These results suggest the efficacy of Q38 for the control of tick infestations in wildlife.

Risk factors and outcome analysis among young Filipino patients with nontraumatic intracerebral hemorrhage: A cross-sectional study

OBJECTIVES: To determine the prevalence, risk factors, etiology, location, and outcome of non-traumatic intracerebral hemorrhage (ICH) in young Filipino patients. To identify factors associated with poor outcome and mortality METHODOLOGY: Review of charts of patients age /- 45 years admitted for acute non-traumatic intracerebral hemorrhage with neuroimaging evidence of symptomatic ICH was done. Data regarding risk factors, location, etiology and outcome were analyzed using SPSS 9.01 for Windows and Epi 6 for univariate and multiple regression analysis RESULTS: Seventy subjects were included. 66 percent were males and 34 percent were females. The mean age of the subjects was 37 years old. Prevalence of non-traumatic ICH among stroke in young adults is 17 percent. The most frequent risk factors were hypertension, smoking, alcohol use, and family history of CVD. The common locations in order were basal ganglia/internal capsule (44 percent), thalamus (22 percent), lobar, and brainstem. The common causes of ICH were hypertension (46 percent), vascular malformations (16 percent) and hematologic/coagulation disorders (13 percent). Arteriography was done in 33 percent of cases. Overall in-hospital mortality rate was 8.5 percent in the acute stage of ICH. Factors independently associated with poor outcome and mortality on multivariate regression analysis were posterior circulation (p=0.005), presence of intraventricular extension (p=0.002), ICH volume 30 cc (p= 0.011), and smoking history (p=0.021) CONCLUSION: Non-traumatic intracerebral hemorrhage in young Filipino adults has a heterogenous etiology. Non-traumatic ICH occurred in 17 percent of young stroke patients. Posterior circulation involvement, presence of intraventricular extension, ICH volume of 30cc and smoking history were significant factors associated with poor outcome.