Emergency Preparedness and Response
Disease outbreaks are a common public health problem and investigating them can be challenging because many pathogens can cause them. Implementing appropriate control measures depends on finding a cause (etiology). However, diagnostic test results are often missing or difficult to interpret, or an appropriate diagnostic test may be unavailable locally.
This website provides information and resources to help public health professionals and partners investigate unexplained respiratory disease outbreaks (URDO).
Unexplained Respiratory Disease Outbreaks Work Group FactsheetCdc-pdf
Did you know CDC can provide support if you have a respiratory disease outbreak of unknown etiology? Learn more about how you can get CDC’s help to investigate your outbreak.