Monday, July 27, 2009

Tamiflu-resistant swine flu

The US has a huge stockpile of Tamiflu and Relenza as anti-virals. Anti-virals are treatments for patients who have contracted the various flus already--they are not vaccines and hence, are not used as prophylaxis in prevention of said influenza viruses.

http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5816a6.htm

Read the editorial note, not just the article. Down at the bottom, you will see this:

Compared with M2 blockers, NAIs previously exhibited lower frequency of antiviral resistance during therapeutic use (16,19). However, during the 2007--08 influenza season, emergence and transmission of oseltamivir-resistant A (H1N1) viruses, with a H274Y mutation in the neuraminidase protein, was simultaneously detected in several countries in the Northern Hemisphere (4,20--22) and spread globally (7,9,23). As of April 2009, similar trends have been observed in the 2008--09 influenza season, with many countries reporting up to 100% oseltamivir resistance in A (H1N1) viruses
.

In case you were wondering, oseltamivir = Roche's Tamiflu, currently the anti-viral of choice for the nation's stock pile. It no longer works for avian or swine flus! So if you're sick from the swine flu enough to get admitted into a hospital, they will probably administer Tamiflu orally, as it is a pill. I have seen government data that up to half of admitted swine flu patients in ICU end up dead. One other possible reason for resistance (besides prevalence of Tamiflu in our sewage and water system) is oral consumption decreases and delays absorption of the compound. One of the members in this email thread used to work at Roche, perhaps he can add some color to this assessment.

The 2nd drug of choice is GlaxoSmithKline's Relenza, or zanamivir. It has maintained efficacy for treating various strains of flu, and is in the form of powder. If a patient is seriously ill enough to be intubated, that option is ruled out because Relenza can only be inhaled.

Which only leaves us with BCRX's Peramivir intravenous application as the only option. The share price has gapped up recently, despite only completion of Phase II clinical trials in the US. It is already approved for E-IND use, which basically allows individual doctors to administer it for individual patients as an emergency. But due to its efficacy, investors are waiting for Emergency Use Authorization, which allows national stockpiling, despite lack of FDA approval. This will translate to millions of doses, not just a few thousand.

Many investors feel this action is not just pending, but imminent. Vaccine manufacturers are scrambling to meet exploding demand--and they will still fall short, as best-case scenarios call for delivery in October. Unfortunately, school starts in August/Septemer, so we will unquestionably see a soaring number of cases this fall--rendering vaccines useless. Fortunately, most cases will be mild, and won't require hospitalization. But due to the high infectious rates, and sheer numbers of cases, hospitalization and death rates will be higher than seasonal flu cases by orders or magnitude.

http://news.yahoo.com/s/ap/20090724/ap_on_he_me/us_med_swine_flu

http://www.cbsnews.com/stories/2009/07/21/earlyshow/health/main5177452.shtml

Government health officials aren't in business to create unnecessary hype--quite the contrary--they aim to act quickly and decisively while attempting to not cause undue panic. They usually fail in both. However, they are on the hook to prepare for a worst-case scenario, and they will look awfully foolish if they don't take emergency measures as part of their contingency plans. In Japan and the rest of Asia, where sensitivity and awareness to infectious disease is high due to close living quarters, their FDA equivalent health agency has already completed Phase III trials, and results for Peramivir were positive. Approval in Japan will precede US FDA approval, and they will surely order millions of doses of Peramivir.

While FDA approval for Peramivir is further down the road, they will have to act soon in order to secure enough Peramivir inventory to prepare for a worst-case scenario. Because the public will not appreciate it if they find out their own US government is forced to stand in line--behind other countries because they didn't act quickly enough to protect their citizens.

I bought BCRX in the 2's and 3's in May and June, and it's currently bumping up against $10. I'm praying for a pullback to accumulate more shares, but I'm afraid the world is waking up to the severity and depth of the swine flu. It may keep increasing, as the big boys on Wall St. become more cozy with the investment thesis. However, with market makers, you never know, and they can force one more bear raid to help the shorts cover, and to help their friends at Goldman Sachs buy in at lower prices. Wall St. analysts usually don't get it right, so when they guess wrong, they have friends who come to their rescue to drive share prices down. Instead of complaining about it, we can use it to our advantage, buying at lower prices when the opportunity presents itself. But it can easily gap up into the teens upon arrival of the EUA. Let's hope all the fear-mongering ends up being a false alarm. On the other hand, I'm not betting on it. Good luck to all longs,

Disclaimer: This is not a recommendation. Do your own due diligence.

Disclosure: Long BCRX shares.

2 comments:

  1. What an incredible article. I am also long in BCRX and you have answered so many questions I had. You write in a very clear and concise style. I really appreciate your insightful thoughts into this company. Good luck to you and I hope to read more articles from you.

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  2. Thanks for the comments, Kirk. I cannot emphasize enough performing your own due diligence, because when the share price moves against you, and your investment thesis remains intact, you won't be shaken out of your position by market manipulation. In fact, where I've made my biggest profits is when I use a bear raid as a buying opportunity, accumulating more shares are a lower price. Good luck to you and all the best.

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