All three makers of U.S.-authorized vaccines — Pfizer, Moderna and Johnson & Johnson — are studying the safety and effectiveness of their vaccines in children, including as young as 6 months.
Johnson & Johnson said last week that its vaccine "will initially be tested in a small number of adolescents, which will be expanded to a larger group in a step-wise approach, if initial data shows an acceptable safety profile."
Those expanded trials started last month, when J&J vaccine shots were given to teens from 16 to 17 years old. If all goes well, the trial will include kids as young as 12, the company says.
Moderna said in mid-April that its vaccine study in adolescents is now fully enrolled, with around 3,000 people age 12 to 17 slated to receive doses. A second phase of the study will follow, including children who are from 6 months to 11 years old.
Pfizer says it won't be ready to ask the FDA for new emergency use authorization expansions for kids younger than 12 until September. One such request would cover children from 2 to 5 years old; a second would apply to ages 5 to 11. A third request, aimed at protecting infants and toddlers, isn't expected until the fourth quarter of this year.
Pfizer and BioNTech say they have the capacity to manufacture up to 2.5 billion vaccine doses in 2021, and to produce at least 3 billion doses in 2022.
In another move that could boost COVID-19 vaccine availability, Pfizer recently asked the FDA to approve a change that would allow its vaccine to be stored at common refrigerator temperatures of 2 to 8 degrees Celsius (roughly 36 to 46 degrees Fahrenheit) for up to four weeks. The company says it submitted data about the vaccine's stability at those temperatures on April 30.
In general, Pfizer's vaccine must be stored at ultra-cold temperatures of around -70 degrees Celsius (-94 degrees Fahrenheit). The company loosened that requirement a bit in February, however, saying the shots, which use messenger RNA, could safely be kept at typical home freezer temperatures, -25 to -15 degrees Celsius (-13 to 5 degrees Fahrenheit), for up to two weeks.
The COVID-19 vaccine's success has brought billions of dollars to Pfizer. In the first quarter of 2021 alone, the vaccine added $3.5 billion in global revenue, Pfizer chairman and CEO Albert Bourla told investors in a conference call last Tuesday. Over the entire year, Pfizer could bring in around $26 billion based on the vaccine, Bourla said.
The company and BioNTech, its development and revenue-sharing partner, have shipped some 430 million doses to 91 countries and territories, Bourla said last week.
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