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Marshfield Clinic Research Institute helps study showing increased household flu spread during pandemic
![Marshfield Clinic Research Institute helps study showing increased household flu spread during pandemic](https://wisconsinhealthnews.com/wp-content/uploads/2018/02/Marshfield-clinic.png)
Marshfield Clinic Research Institute played a role in a recent study showing household spread of flu more than doubled during the second flu season of the pandemic compared to seasons before COVID-19.