Rep. Mark DeSaulnier's condition has deteriorated to critical as the California Democrat battles complications with pneumonia.
DeSaulnier, 67, was hospitalized more than a week ago to treat pneumonia complications arising from his fracturing a rib during a run. He subsequently tested negative for the novel coronavirus.
But DeSaulnier has worsened since then, his office said today.
"The doctors are doing everything they can to care for the Congressman," chief of staff Betsy Arnold Marr said in a statement. "Mark’s family and staff appreciate your thoughts and prayers during this very difficult time."
Congressional colleagues offered words of support. Eric Swalwell, whose Bay Area district adjoins DeSaulnier's, asked on Twitter for followers to "please pray for my colleague and East Bay neighbor."
DeSaulnier was elected to Congress in 2014 representing a district that includes most of Contra Costa County.