Coronavirus | Pfizer-BioNTech begin global study of lead vaccine candidate

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    German biotech BioNTech and U.S. drugmaker Pfizer Inc said on Monday they would begin a pivotal global study to evaluate their lead COVID-19 vaccine candidate.

    Also read: Coronavirus | Imported vaccines may be fast-tracked

    If the study is successful, the companies could submit the vaccine for regulatory approval as early as October, putting them on track to supply up to 100 million doses by the end of 2020 and 1.3 billion by the end of 2021.

    Patients are each given two doses of the drugmakers vaccine to help boost immunity, so the first 100 million doses would vaccinate around 50 million people.

    The study is expected to include about 120 sites globally and could include up to 30,000 participants. It will include regions heavily impacted by COVID-19.

    Also read: Coronavirus | India will have to deliver vaccine on a scale never seen before: Oxford scientist Andrew Pollard

    The initiation of the Phase 2/3 trial is a major step forward in our progress toward providing a potential vaccine to help fight the ongoing COVID-19 pandemic, said Kathrin Jansen, head of vaccine research and development at Pfizer.

    The trial hones in on Pfizers most promising vaccine candidate, which it calls BNT162b2. Earlier studies filtered out other potential vaccines.

    Also read: Positive news on Oxford COVID-19 vaccine could come today: report

    Pfizer has already has an agreement to sell 100 million doses of its vaccine to the U.S. government and give it the option to buy 500 million more. It is in talks with other governments, including the European Union, about similar deals.

    Over 150 vaccines are being developed against COVID-19, which has claimed nearly 650,000 lives globally and crippled economies.

    The vaccine utilizes chemical messenger RNA to mimic the surface of the coronavirus and teach the immune system to recognize and neutralize it. Although the technology has been around for years, there has never been an approved messenger RNA (mRNA)vaccine.

    Moderna Inc also launched an advanced stage trial with 30,000 participants on Monday. Johnson & Johnson is starting clinical trials this week.

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