The highly pathogenic avian influenza subtype A (H5N1) strain has caused major outbreaks in Asia, and recent evidence of human-to-human transmission has caused health officials to increase preparedness and response tactics.
The highly pathogenic avian influenza subtype A (H5N1) strain has caused major outbreaks in Asia, and recent evidence of human-to-human transmission has caused health officials to increase preparedness and response tactics.