Trailing a virus.

Recounts efforts of medical researchers Lam Sai Kit and Chua Kaw Bing to identify a virus outbreak in Malaysia. Viral connection to pig farming; Symptoms fitting the profile of Japanese encephalitis; The deadly virus having a DNA sequence similar to an Australian virus called Hendra; Confirmation of Lam's hunch that the pathogen was part of the Pramyxoviridae family; Treatment with ribavirin; How the virus attacks the body; Impact on the pork industry and Malay economy.