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VBI Vaccines Announces European Commission Marketing Authorisation for PreHevbri™, a 3-Antigen Adult Hepatitis B Vaccine

VBI Vaccines Inc. (Nasdaq: VBIV) (VBI), a biopharmaceutical company driven by immunology in the pursuit of powerful prevention and treatment of disease, today announced that the European Commission (EC) has granted Marketing Authorisation for PreHevbri™ [Hepatitis B vaccine (recombinant, adsorbed)] for active immunisation against infection caused by all known subtypes of the hepatitis B virus (HBV) in adults. It can also be expected that hepatitis D will be prevented by immunisation with PreHevbri as hepatitis D (caused by the delta agent) does not occur in the absence of hepatitis B infection. The use of PreHevbri should be in accordance with official recommendations. PreHevbri contains the full antigenic composition of the hepatitis B virus surface antigen, including the S, pre-S2, and pre-S1 HBV surface antigens, and is the only approved 3-antigen HBV vaccine for adults in the European Union (EU) and in the European Economic Area (EEA) countries – Iceland, Liechtenstein, and Norway.

“We are excited to be able to announce the approval of PreHevbri in Europe, marking our second major approval for this differentiated HBV vaccine in five months, following the U.S. FDA approval at the end of November last year,” said Jeff Baxter, VBI’s President and CEO. “Hepatitis B is a highly infectious, under-reported, persistent public health problem in Europe and we believe PreHevbri has the potential to be a meaningful new tool for healthcare providers as they endeavor to fight it. We are committed to being part of this fight and are working hard to make PreHevbri available in different European countries as quickly as possible.”

The European Commission’s centralized marketing authorisation is valid in all EU Member States as well as in the European Economic Area (EEA) countries (Iceland, Liechtenstein, and Norway). VBI expects to make PreHevbri available in certain European countries beginning at the end of 2022.

The approval follows a positive opinion granted in February 2022 by the EMA’s Committee for Medicinal Products for Human Use (CHMP), which was based on the positive results from two pivotal, randomized, double-blind, controlled Phase 3 clinical studies, PROTECT and CONSTANT. Data from these studies were published, respectively, in The Lancet Infectious Diseases in May 2021 and The Journal of the American Medical Association Network Open in October 2021 . Both studies compared PreHevbri to Engerix-B, a single-antigen HBV vaccine. Results from the PROTECT study showed that PreHevbri elicited higher rates of seroprotection in all subjects age 18+ (91.4% vs. 76.5%), including in adults age 45+ (89.4% vs. 73.1%). The integrated safety analysis of both studies demonstrated good tolerability with no unexpected reactogenicity. The most common adverse events in all age groups were injection site pain and tenderness, myalgia, and fatigue, all which generally resolved without intervention in 1-2 days.

VBI continues to support the United Kingdom’s Medicines and Healthcare products Regulatory Agency (MHRA) review as part of the EC Decision Reliance Procedure (ECDRP), which was initiated upon receipt of the positive CHMP opinion in February.

About Hepatitis B

Hepatitis B is one of the world’s most significant infectious disease threats with more than 290 million people infected globally. HBV infection is the leading cause of liver disease and, with current treatments, it is very difficult to cure, with many patients going on to develop liver cancers. An estimated 900,000 people die each year from complications of chronic HBV such as liver decompensation, cirrhosis, and hepatocellular carcinoma.

About PreHevbri™

VBI’s hepatitis B vaccine is the only 3-antigen hepatitis B vaccine, comprised of the three hepatitis B surface antigens of the hepatitis B virus – S, pre-S1, and pre-S2. It is approved for use in the European Union/European Economic Area, the United States, and Israel. The brand names for this vaccine are : PreHevbri™ (EU/EEA), PreHevbrio™ (US), and Sci-B-Vac® (Israel).

Full European Summary of Product Characteristics for PreHevbri are available from the EMA website at www.ema.europa.eu .

Please visit www.PreHevbrio.com for U.S. Important Safety Information for PreHevbrio™ [Hepatitis B Vaccine (Recombinant)], or please see U.S. Full Prescribing Information .

About VBI Vaccines Inc.

VBI Vaccines Inc. (“VBI”) is a biopharmaceutical company driven by immunology in the pursuit of powerful prevention and treatment of disease. Through its innovative approach to virus-like particles (“VLPs”), including a proprietary enveloped VLP (“eVLP”) platform technology, VBI develops vaccine candidates that mimic the natural presentation of viruses, designed to elicit the innate power of the human immune system. VBI is committed to targeting and overcoming significant infectious diseases, including hepatitis B, coronaviruses, and cytomegalovirus (CMV), as well as aggressive cancers including glioblastoma (GBM). VBI is headquartered in Cambridge, Massachusetts, with research operations in Ottawa, Canada, and a research and manufacturing site in Rehovot, Israel. For more information, visit www.vbivaccines.com .

Cautionary Statement on Forward-looking Information

Certain statements in this press release that are forward-looking and not statements of historical fact are forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and are forward-looking information within the meaning of Canadian securities laws (collectively, “forward-looking statements”). The Company cautions that such statements involve risks and uncertainties that may materially affect the Company’s results of operations. Such forward-looking statements are based on the beliefs of management as well as assumptions made by and information currently available to management. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors, including but not limited to, the impact of general economic, industry or political conditions in the United States or internationally; the impact of the ongoing COVID-19 pandemic on our clinical studies, manufacturing, business plan, and the global economy; the ability to successfully manufacture and commercialize PreHevbrio/PreHevbri; the ability to establish that potential products are efficacious or safe in preclinical or clinical trials; the ability to establish or maintain collaborations on the development of pipeline candidates and the commercialization of PreHevbrio/PreHevbri; the ability to obtain appropriate or necessary regulatory approvals to market potential products; the ability to obtain future funding for developmental products and working capital and to obtain such funding on commercially reasonable terms; the Company’s ability to manufacture product candidates on a commercial scale or in collaborations with third parties; changes in the size and nature of competitors; the ability to retain key executives and scientists; and the ability to secure and enforce legal rights related to the Company’s products. A discussion of these and other factors, including risks and uncertainties with respect to the Company, is set forth in the Company’s filings with the SEC and the Canadian securities authorities, including its Annual Report on Form 10-K filed with the SEC on March 7, 2022, and filed with the Canadian security authorities at sedar.com on March 7, 2022, as may be supplemented or amended by the Company’s Quarterly Reports on Form 10-Q. Given these risks, uncertainties and factors, you are cautioned not to place undue reliance on such forward-looking statements, which are qualified in their entirety by this cautionary statement. All such forward-looking statements made herein are based on our current expectations and we undertake no duty or obligation to update or revise any forward-looking statements for any reason, except as required by law.

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