are characteristic of B. procyonis roundworms and distinguish it from other nematodes that are known to affect humans (2,3). This case is unusual in several respects: the patient is the oldest known person with confi rmed B. procyonis NLM; it is only the second case reported from Canada (5); and it is a pathologically proven example of cerebral B. procyonis infection in a human without major cl...

Ascaris lumbricoides infection affects approximately 1.5 billion people globally. Children with environmental and socio-economic risk factors are more susceptible to infestation, with serious complications such as intestinal obstruction (IO), volvulus, intussusception, and intestinal necrosis.We present the case of a 3-year-old girl who arrived at emergency department with abdominal pain and di...

Risk factors for Lyme disease in a small rural community in northern California. Population structure of the Lyme bor-reliosis spirochete Borrelia burgdorferi in the Western black-legged tick (Ixodes pacificus) in northern California. clones of Borrelia burgdorferi sensu stricto cause invasive infection in humans. distribution of the ospC gene, a transfer-able serotype determinant of Borrelia b...

A genetically diverse population of Haemonchus contortus was serially passaged through Merino hosts bred for either increased or decreased resistance to the parasite. After 30 parasite generations, the resulting nematode sub-populations were compared with each other and with the foundation population, by infecting lines of the selected sheep and measuring the resulting faecal egg counts (FECs) ...

Bacillus thuringiensis crystal (Cry) proteins are the most widely used biological insecticides in the world. Their value in safely controlling insects that destroy crops and transmit human diseases is well established.Here, we reviewB. thuringiensisCry proteins as novel anthelmintics with a unique mode of action. In laboratory studies, Cry proteins are highly effective against a broad range of ...

To the Editor: Baylisascaris procyonis roundworms are common parasites of raccoons (Procyon lotor) in several regions of North America, Europe, and Asia. These parasites are increasingly recognized as a cause of larva migrans in humans, an infection that often results in severe neurologic sequelae or death. In addition, larva migrans has been documented in ≈90 species of wild and domestic birds...

1. General Introduction 1.1. The lifecycles of Trichuris trichiura and Ascaris lumbricoides 1.2. Morbidity and burden of disease 1.3. Epidemiology and age profiles of infection 1.4. Predisposition and susceptibility to infection 1.5. Immunological responses and the peak shift hypothesis 1.6. Treatment and control 1.7. Helminth frequency distributions 1.8. Density dependence in helminth species ...