The United States, if approved by specialists, will produce about 600 million doses of coronavirus vaccines, US President Donald Trump told a briefing on Tuesday.

"This evening, I’m pleased to announce that we have reached an agreement with Moderna to manufacture and deliver 100 million doses of their coronavirus vaccine candidate. The federal government will own these vaccine doses; we’re buying them," he noted. "Three vaccine candidates are now in phase three trials already — the final stage of clinical trials. This is the final stage. We are investing in the development and manufacture of the top six vaccine candidates to ensure rapid delivery. The military is ready to go. They’re ready to deliver a vaccine to Americans as soon as one is fully approved by the FDA, and we’re moving very close to that approval."

"We’re on track to rapidly produce 100 million doses, as soon as the vaccine is approved, and up to 500 million shortly thereafter. So we’ll have 600 million doses. Operation Warp Speed is the largest and most advanced operation of its kind anywhere in the world and anywhere in history," Trump said. We’ve treated more than 86,000 Americans with convalescent plasma. A recent Mayo Clinic study found that this treatment may produce results which are incredible. We look to a reduction and reduced mortality rate by 50 percent, and possibly even more than 50 percent,"