Sinovac Product Pipeline News

Sinovac Product Pipeline News

BEIJING, China, October 19, 2016 -- Sinovac

Biotech Ltd. (NASDAQ: SVA), a leading provider of biopharmaceutical products in China, today provided an update on the Company's

Sabin-inactivated polio vaccine (sIPV)-The

Company initiated the phase I clinical trial in October 2016. The phase I trial is designed to assess the safety and tolerance

of the vaccine candidates. Subjects include adults aged 18-49 years old, young children aged 6-12 years old, and infants aged two

months old for a total of 108 volunteers. The phase II trial is expected to be launched after the preliminary results of phase

I trials are available. For Phase II, 600 infants (aged two months old) are expected to be enrolled to select the objective dosage

and assess immunogenicity with a blinded, randomized and controlled design. The phase II clinical trial is expected to be completed

in the third quarter of 2017. The phase III clinical trial is expected to assess the immunogenicity and safety with the vaccine

candidate of the selected dosage from the phase II trial. Sinovac originally obtained approval for sIPV clinical trials in December

Varicella vaccine -The Company

completed the phase I clinical trial in Henan Province with results showing that the varicella vaccine candidate has a good safety

profile. In the third quarter of 2016, the Company initiated the phase III clinical trial, which measures efficacy and immunogenicity

with a randomized, double - blind, parallel - treatment, placebo - controlled study in addition to safety. Over 6,000 subjects

aged from one to twelve years old have been enrolled as volunteers for the phase III clinical trial. Sinovac obtained approval

to commence human clinical trials in 2015.

Mr. Weidong Yin, Chairman, President and

CEO of Sinovac commented, "We are pleased to provide an update on the advancement of our vaccine pipeline, which underscores

our strong R&D capabilities and future growth prospects. As we progress closer towards development and commercialization, our

varicella vaccine and sIPV are expected to contribute to our domestic and overseas expansion efforts. With our existing commercial

vaccines as well as the advancement of our pipeline products, we are confident Sinovac will continue to expand its vaccine portfolio

and overall market position."

Biotech Ltd. is a China-based biopharmaceutical company that focuses on the research, development, manufacturing, and commercialization

of vaccines that protect against human infectious diseases. Sinovac's product portfolio includes vaccines against hepatitis A and

B, seasonal influenza, H5N1 pandemic influenza (avian flu), H1N1 influenza (swine flu), mumps and canine rabies. In 2009, Sinovac

was the first company worldwide to receive approval for its H1N1 influenza vaccine, which it has supplied to the Chinese Government's

vaccination campaign and stockpiling program. The Company is also the only supplier of the H5N1 pandemic influenza vaccine to the

government stockpiling program. Sinovac's newly developed innovative vaccine against HFMD caused by EV71 is ready for market launch.

The Company is currently developing a number of new products including a Sabin-strain inactivated polio vaccine, pneumococcal polysaccharides

vaccine, pneumococcal conjugate vaccine and varicella vaccine. Sinovac primarily sells its vaccines in China, while also exploring

growth opportunities in international markets. The Company has exported select vaccines to Mexico, Mongolia, Nepal, Tajikistan,

Bangladesh, Chile and the Philippines, and was recently granted a license to commercialize its influenza vaccine in Guatemala.

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

press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform

Act of 1995. Such statements involve known and unknown risks, uncertainties and other factors that may cause our actual results,

levels of activity, performance or achievements to differ materially from any future results, levels of activity, performance or

achievements expressed or implied by these forward looking statements. Factors that might cause such a difference include our inability

to compete successfully in the competitive and rapidly changing marketplace in which we operate, failure to retain key employees,

cancellation or delay of projects and adverse general economic conditions in the United States and internationally. These risks

and other factors include those listed under "Risk Factors" and elsewhere in our Annual Report on Form 20-F as filed

with the Securities and Exchange Commission. In some cases, you can identify forward-looking statements by terminology such as

"may," "will," "should," "expects," "intends," "plans,"

"anticipates," "believes," "estimates," "predicts," "potential," "continue,"

or the negative of these terms or other comparable terminology. Although we believe that the expectations reflected in the forward-looking

statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. The Company assumes

no obligation to update the forward-looking information contained in this release.