Swine flu plays resurface ahead of next FDA vaccine meeting

BioCryst Pharmaceuticals (BCRX) gapped up again 22% from yesterday's close of $6.21 to $7.58 today, up 22%, while Hemispherx Biopharmaceuticals surged almost 33% from $2.49 to $3.31. Both are up triple digits since we bought them in May (see June 4, 2009 "Swine flu revisited" blog).

BCRX's Peramivir is an effective intravenous anti-viral against seasonal flu, avian flu, and the latest swine flu (H1N1), shown to reduce flu symptoms in Phase III trials conducted by Japanese partner Shionogi. BCRX is also waiting for Emergency Use Authorization (EUA) by the FDA for severe cases requiring hospitalization. The EUA is required since Peramivir is not approved by the FDA. Peramivir has shown at least equal efficacy against the flu when compared to Roche's Tamiflu anti-viral in clinical trials.

HEB is having a conference call tomorrow to update the investment and medical communities on their clinical developments for Ampligen, a flu adjuvant. Studies have been performed worldwide for use of Ampligen as a booster alongside existing vaccines. Ampligen is also under FDA review for approval as a treatment for Chronic Fatigue Syndrome.

Novavax (NVAX) ended today's session at $3.19, up from $3.02. They also named John Trizzino Senior VP of International and Government alliances, in a sign that they are intensifying efforts with government agencies worldwide on getting approved for their vaccine-line particle (VLP) platform. With VLP, the time to manufacture a vaccine is cut in half--approximately 10-12 weeks, and yields are higher because they don't require egg-based cultures. Fixed costs are also lower due to disposable manufacturing systems.

This Thursday, July 23, the FDA Vaccine and Related Biological Products Advisory Committee will meet with vendors to discuss vaccines against the H1N1 virus: http://www.fda.gov/AdvisoryCommittees/Calendar/ucm170908.htm

This meeting is a sequel to the National Biodefense Science Board (NBSB) meeting held last month (see July 20, 2009 "BCRX potential" blog). The questions held at the NBSB will hopefully be answered this Thursday during the FDA Vaccine AC meeting. Shares of all 3 aforementioned companies jumped in anticipation of positive results.

As mentioned in previous blogs, the World Health Organization (WHO) raised the pandemic alert in June to Phase 6--the highest level possible, which last occurred 41 years ago. The foregone conclusion is that the H1N1 is spreading faster than previous pandemic flus. By the time it hits the US hard in the fall, it is estimated that 1 out of 3 Americans will contract the virus. So far, the mortality rate is lower than the avian flu, but should it mutate, the result strains could increase the severity as well as the virulence.