The TWiP peeps solve the case of the Panamanian Mother with Steatorrhea, and reveal new monoclonal antibodies that effectively block malarial infection.

The TWiPonderers solve the case of the Timber Worker with Severe Shaking Chills, and describe an experimental malaria vaccine comprising attenuated sporozoites produced by genetic engineering.

The TWiP trio visit the Bronx Zoo where Paul solves the case of the Four Year Old with Pulmonary Edema, and talks about his career as the Chief Veterinarian and Director of the Zoological Health program for the Wildlife Conservation Society.

Daniel and Vincent solve the case of the Truck Driver from India, discuss why parasites resistant to an antimalarial drug are not transmitted by mosquitoes, and introduce Paul who presents a new case study.