A well-known scientist is set to testify before a Senate committee. This appearance is expected to be contentious, particularly with the committee's chairman. The scientist has a long history of discussing health threats with Congress, including diseases like HIV/AIDS and Ebola.

The committee chairman has been critical of the scientist's role in the US response to a recent pandemic. Further details about the upcoming testimony are available from news sources. The scientist's testimony will mark another instance in a long series of appearances before Congress, totaling around 250 times over the course of their career.