Pfizer expects to apply to the Food and Drug Administration in September for emergency authorization to administer its coronavirus vaccine to children between the ages of 2 and 11, the company told Wall Street analysts and reporters on Tuesday during its quarterly earnings call.

The company said it also plans to apply this month for full approval of the vaccine for use in people from ages 16 to 85. And it said it expected to have clinical trial data on the safety of its vaccine in pregnant women by early August.

By early next week, the F.D.A. is expected to issue an emergency use authorization allowing the vaccine to be used in children 12 to 15 years old, a major step ahead in the U.S. fight against Covid.