Sinovac Biotech Ltd.

(NYSE Amex: SVA), a leading provider of vaccines in China, today announced

that it will host a conference call on Monday, November 16, 2009 at 9:00 a.m.

ET to review the Company's third quarter financial results for the period

ended September 30, 2009 and provide an update on recent corporate

developments.

To access the conference call, please dial 1-877-407-4018 (USA) or

1-201-689-8471 (international). A replay of the call will be available from

12:00 p.m. ET on November 16, 2009 to November 30, 2009 at midnight. To access

the replay, please dial 1-877-660-6853 (USA) or 1-201-612-7415 (international)

and reference the account number 3055 and the access code 337401.

A live audio webcast of the call will also be available from the Investors

section on the corporate web site at http://www.sinovac.com . A webcast replay

can be accessed on the corporate website beginning November 16, 2009 and the

replay will remain available for 30 days.

About Sinovac

Sinovac Biotech Ltd. is a China-based biopharmaceutical company that

focuses on the research, development, manufacture and commercialization of

vaccines that protect against human infectious diseases. Sinovac's vaccine

products, including Healive(R) (hepatitis A), Bilive(R) (combined hepatitis A

and B), Anflu(R) (influenza), Panflu(TM), Sinovac's pandemic influenza vaccine

(H5N1), and PANFLU.1(TM), Sinovac's H1N1 vaccine, have already been approved

for government stockpiling. Sinovac is developing vaccines for enterovirus 71,

universal pandemic influenza, Japanese encephalitis, and human rabies. Its

wholly owned subsidiary, Tangshan Yian, is conducting field trials for

independently developed inactivated animal rabies vaccines.

For more information, please contact:

Helen G. Yang

Sinovac Biotech Ltd.

Tel: +86-10-8289-0088 x871

Fax: +86-10-6296-6910

Email: info@sinovac.com

Media:

Janine McCargo

The Ruth Group

Tel: +1-646-536-7033

Email: jmccargo@theruthgroup.com

Investors:

Amy Glynn/Stephanie Carrington

The Ruth Group

Tel: +1-646-536-7023/7017

Email: aglynn@theruthgroup.com

scarrington@theruthgroup.com