Volume 28, Number 4—April 2022
Research Letter
Pseudo-Outbreak of Bordetella parapertussis Caused by Contaminated Swabs in the Netherlands
Figure

Figure. Epidemiologic timeline of Bordetella parapertussis–positive findings in a pseudo-outbreak caused by contaminated swabs, the Netherlands, 2020–2021. PCR results positive and negative for B. parapertussis are denoted for pediatric patients, their family members, healthcare workers, and other care providers.
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