Mr. Becerra was long dismissed in the contest until the abrupt departure of Eric Swalwell created a surprise path for an experienced Democrat.

The infections are the first detected in the United States since the 1960s. Officials are aggressively trying to prevent the parasite from spreading in the nation’s largest cattle-producing state.

Elon Musk’s rocket company said Google would pay it $920 million a month, as it prepared for its initial public offering.