Surveillance

Promising results in California, but antibacterial resistance still a concern

Perri Klass, MD, on vaccine milestones, evolving risks, and how public health protects kids

California sample tests negative for all types of flu by the time it reaches federal lab

Case stands out for being outside the usual farm work setting

The bird flu has been spreading widely since March

Seroprevalence study prompts CDC to revise prevention guidance for farm workers

Rob Breiman, MD, discusses his public health work on the continent

The infection happened at a backyard farm

"We need to take steps today to prevent the worst-case scenario," says expert

In Wisconsin, there have been about 1,000 cases so far this year versus a total of 51 last year

"If we are seeing human-to-human transmission now, it is a big deal," one expert says

Signal has generally trailed off, but more sensitive method showed virus lingering in Texas

This new surge is different, WHO leader says

Case shows the failure of WHO's global effort, according to scientists tracking polio outbreaks