Monitoring Infectious Disease

Dr. Terrence Tumpey examines specimens the pandemic influenza virus

A health official administers polio vaccine to a child in Lagos, Nigeria

A nurse and a patient leave a hospital

A scientist sorts mosquitoes

A local farmer stands on his land in Karatina, Kenya

Shadows of children are seen on the ground during a march in New Delhi

The ebola virus is shown in this undated electron micrograph photo

The electron micrograph of he highly pathogenic avian influenza strain H5N1 (gold)

Dead turkeys are loaded into a disposal unit