The federal government has allocated 5.8 million Moderna doses to states this week, according to the latest data from the Centers for Disease Control and Prevention. That’s 1.5 million more doses than the 4.3 million the company supplied the previous week — an increase of about 35%.

Meanwhile, Pfizer doses increased only slightly over the previous week — 70,000 doses, or less than 2% — for a total just shy of 4.4 million vaccine doses this week.

“Yesterday, we announced a 16% increase in supply flowing to states every week for the next three weeks to a minimum of 10 million doses per week. That’s good news,” said Andy Slavitt, White House adviser on the COVID-19 response, at a Wednesday press briefing. The projections can help states with planning.

What he didn’t say, but is clear from the allocation data, is that most of the latest supply increase is because of Moderna’s additional doses.