A panel of public health experts examines the topic of infectious disease and offers some insights into this ever-changing aspect of medicine and our environment. Hepatitis A. West Nile Virus. Bird Flu. SARS. Monkeypox. Infectious diseases are all around us, and a new one seems to emerge every year. In some cases, transmission may be just a plane ride away. What is causing these new diseases and strains to originate? Is an epidemic on hand? What can we do to protect ourselves and our families? This lecture is presented in collaboration with the Massachusetts Medical Society.