RAMPING UP SUPPLY — The maker of an antiviral drug that's shown promise for treating monkeypox is discussing with the U.S. government how to ramp up its production as dozens of countries now seek orders — and as, this morning, it announced $13 million in new orders. As the WHO meets today to discuss whether monkeypox rises to the level of being a public health emergency of international concern, vaccines and treatments — including antivirals — could see even higher demand and take on greater importance around the world than usual. Siga, the small company that makes the antiviral tecovirimat, has been talking with Biden administration officials about expanding manufacturing capacities, including possibly opening a second manufacturing site, CEO Phillip Gomez told Global Pulse. The discussions with the Biomedical Advanced Research and Development Authority, Strategic National Stockpile and Department of Defense of expanded manufacturing come as monkeypox outbreaks grow and demand goes global — another signal of the scramble to prepare for the virus. Siga regularly meets with officials in HHS, discussing how to meet the growing demand. HHS officials declined to comment on any potential discussions with public partners. "We work with them on a weekly basis as we are developing — and just got approval for — an intravenous formulation, a pediatric formulation," Gomez said. "Certainly, we talk with people in the administration as well about long-range implications and planning." Though the drug isn't approved for monkeypox in the U.S. (as it is in Europe), it's available under expanded access for investigational new drugs. Current supplies The drug's global supply is relatively small at this point and only known to be stockpiled in two countries: the U.S. and Canada. The U.S. signed a contract with Siga years ago to maintain 1.7 million courses in its reserves, and the Department of Defense recently purchased $7.5 million of the drug. Canada planned to store 50,000 courses in its stockpile when it was first set up in 2019. Thursday morning, Siga announced $13 million in new orders for the drug, mostly from new customers. In March, a country in the Asia-Pacific region purchased $3 million of the treatment to be delivered this year. And now, many more countries are talking with the company about inking a deal. "I think everyone's reassessing," Gomez said. "We're working with many of those countries to work through how to respond to the current monkeypox demand." When tecovirimat could be used Though data about tecovirimat's use in monkeypox patients is relatively sparse, the drug is FDA-approved for smallpox and could have unique advantages in treating monkeypox infections, studies in primates have shown. The ability to use the drug later in an infection could be particularly useful as testing can take multiple days to confirm monkeypox infections. Researchers are studying tecovirimat for use alongside third-generation vaccines. The National Institutes of Health is working to set up more studies in Africa on the drug's use for monkeypox, Gomez said. Expanding manufacturing Since 2020, Siga has produced about 360,000 courses annually — but that amount could increase significantly in the coming months. "We probably [could] do a multiple like, you know, twice that, but we haven't looked at larger volumes yet to see if we can do well over that," Gomez said. Manufacturing, a four-step process based in the U.S., can ordinarily take more than a year to finish the drug — though Siga has some inventory available and has started the process for future orders to cut down the time to delivery. "We are in a very different place than a drug that we may be trying to develop and scale up during an outbreak," Gomez said, also noting the drug has already passed regulatory hurdles as a smallpox treatment. "Depending on the outbreak, I think it's months away. I don't think it's on the order, certainly, of years away."
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