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美國Novartis Chiron
Chiron和歐洲制藥公司賽諾菲安萬特一直是美國市場流感疫苗的主要供應商。該公司主要從事HIV和HCV診斷技術的研究。  2006年諾華制藥(NVS)同意以51億美元，即每股45美元收購其所未擁有的Chiron Corp.(CHIR)的余下的58%的股權。
Preventing tranfusion-transmitted infection is what Chiron is all about. As the world leader in blood safety for the transfusion industry, we develop novel tools, products and services to protect the global blood supply.

Chiron is the blood screening business of Novartis Vaccines and Diagnostics, a division of Novartis AG that was created in 2006 following the acquisition of Novartis Vaccines and Diagnostics.