Sinovac Schedules 2010 Annual Meeting of Shareholders

2010-06-18

Sinovac Schedules 2010 Annual Meeting of Shareholders

Beijing – June 18, 2010 – Sinovac Biotech Ltd. (Nasdaq: SVA), a leading developer and provider of vaccines in China, announced today that it will hold its 2010 Annual Meeting of Shareholders on Thursday, July 15, 2010 at 9:00 a.m. Beijing Time. The meeting will be held concurrently at No. 39 Shangdi Xi Road, Haidian District, Beijing, PRC and at No. 6 Temple Street, St. John’s, Antigua. All shareholders of record as of May 26, 2010 will be eligible to vote and are invited to attend. Sinovac 2009 annual report and the proxy statements are also be available on the company’s website:

http://www.sinovac.com/Investors/SECFilings/ http://www.sinovac.com/Investors/IRHome/presentation/.

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 include Healive® (hepatitis A), Bilive® (combined hepatitis A and B), and Anflu® (influenza). Panflu^TM, Sinovac’s pandemic influenza vaccine (H5N1), has already been approved for government stockpiling. Sinovac is developing vaccines for enterovirus 71, universal pandemic influenza, Japanese encephalitis vaccine, and human rabies vaccine. Its wholly owned subsidiary, Tangshan Yian, is conducting field trials for independently developed inactivated animal rabies vaccines. Its 30%-owned joint venture, Sinovac Dalian, focuses on the research, development, manufacturing and commercialization of vaccines, such as rabies, chickenpox, mumps and rubella vaccines for human use.

Chris Lee

Sinovac Biotech Ltd.

Tel: +86-10-8279-9659

Fax: +86-10-6296-6910

Email: lill@sinovac.com

Investors:

Amy Glynn/Stephanie Carrington

The Ruth Group

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

Email: aglynn@theruthgroup.com

scarrington@theruthgroup.com

Media

Jason Rando

The Ruth Group

Tel: +1-646-536-7025

Email: jrando@theruthgroup.com

About SINOVAC

Sinovac Biotech Ltd. (SINOVAC) is a global biopharmaceutical company headquartered in China. Guided by its mission to “Supply Vaccines to Eliminate Human Diseases,” the Company is dedicated to the research, development, manufacturing and supply of vaccines and related biological products, providing vaccine products and related solutions for disease prevention and control worldwide.

SINOVAC has a diversified vaccine portfolio across multiple disease areas, including influenza, viral hepatitis, varicella, hand, foot and mouth disease (HFMD), poliomyelitis, rabies, tetanus, and pneumococcal disease. Three of SINOVAC's vaccines have been prequalified by the World Health Organization: the inactivated hepatitis A vaccine Healive®, the Sabin-strain inactivated poliomyelitis vaccine (sIPV), and the live attenuated varicella vaccine.

SINOVAC has extensive experience in vaccine research, development and commercialization for emerging infectious diseases and public health emergencies. The Company initiated vaccine R&D in response to major public health threats, including SARS, H5N1, H1N1, and COVID-19, and developed the world's first inactivated SARS vaccine (with Phase I clinical trials completed), China's first inactivated pandemic influenza vaccine against H5N1 (Panflu®), the world's first H1N1 influenza vaccine (Panflu.1®), and CoronaVac®, the world's most widely used inactivated COVID-19 vaccine. Beyond its marketed portfolio, SINOVAC continues to advance its R&D pipeline, spanning combination vaccines, recombinant protein vaccines, mRNA technologies, antibody-based products, and other next-generation technologies and product platforms, while expanding its capabilities in disease prevention and biopharmaceuticals.

With a long-standing commitment to innovation and global health, SINOVAC continues to deepen collaboration with research institutions, international organizations, and local partners while expanding its global presence. Through technological collaboration, localized production, and industrial partnerships, the Company aims to improve access to high-quality vaccines across regions, better address local disease prevention and healthcare needs, and strengthen preparedness for future public health challenges.

For more information, please see the Company's website at www.sinovac.com.