Older Americans and people with weak immune systems can get an extra COVID-19 booster dose this spring.

The Centers for Disease Control and Prevention on Wednesday signed off on a more flexible booster schedule for people who remain at the highest risk from COVID-19 — giving them the choice of a second “bivalent” Pfizer or Moderna booster, the most up-to-date formula.

“Many in the population are experiencing vaccine fatigue but there is a subset who are eager to receive additional doses,” CDC’s Dr. Sara Oliver told an agency advisory panel that expressed support for the change.

Price reductions across the model lineup cut into Tesla’s first-quarter net income, causing it to fall 24% from a year ago.

The Austin, Texas, electric car and solar panel company said Wednesday it made $2.51 billion from January through March, down from $3.32 billion a year ago. Revenue rose 24% to $23.33 billion, but the company’s operating profit margin fell.

Tesla made an adjusted 85 cents per share in the first quarter, matching analyst estimates, according to FactSet. Analysts had expected profits to fall because of the price cuts.

Early in the quarter Tesla reduced U.S. prices on many of its models, then did it a second time early in March. The company slashed U.S. prices two more times in April, including overnight Wednesday, in an effort to boost demand. It trimmed them in Europe as well.