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EXHIBIT 23.1
The Board of Directors
Chiron Corporation:
We consent to incorporation by reference in the registration statements (Nos.
33-35182, 33-20181, 2-90595, 33-44477, 33-65024, 33-65177, 333-10419, and
333-28257) on Form S-8 of Chiron Corporation of our report dated January 31,
2000, relating to the consolidated balance sheets of Chiron Corporation and
subsidiaries as of December 31, 1999 and 1998, and the related consolidated
statements of operations, comprehensive income, stockholders' equity and cash
flows for each of the years in the three-year period ended December 31, 1999,
and the related schedule, which report appears in the December 31, 1999, annual
report on Form 10-K of Chiron Corporation.
/s/ KPMG LLP
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San Francisco, California
August 10, 2000
