Nearly 10% of the 28 million eligible 5- to 11-year-olds will be partially vaccinated by the end of Wednesday, White House COVID coordinator Jeff Zients said at a White House briefing.

The kids vaccine program has been operational for about 10 days.

-ABC News' Cheyenne Haslett

The Northeast and Midwest have seen the greatest increase in cases and hospitalizations as the weather gets colder and people head indoors, according to federal data.

Twenty states have reported at least a 10% increase in hospital admissions over the last week: Arizona, Connecticut, Georgia, Hawaii, Illinois, Indiana, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, Ohio, Oklahoma, South Dakota, Texas and Wisconsin.

Twenty-seven states have seen at least a 10% jump in daily cases over the last two weeks: Arizona, Arkansas, Connecticut, Delaware, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Nevada, New Hampshire, New Mexico, New York, New York City, New Jersey, Ohio, Pennsylvania, Rhode Island, South Dakota, Tennessee, Vermont and Wisconsin.

-ABC News' Arielle Mitropoulos

All fully vaccinated adults in Kansas and Maine can now get a booster if it's been six months since their Pfizer or Moderna dose or two months since their Johnson & Johnson shot, the governors said.

“Expanding access to booster shots will help us put an end to this deadly pandemic," Kansas Gov. Laura Kelly said in a statement.

Nirav D. Shah, director of the Maine CDC, said, "Given the high level of COVID-19 transmission occurring in Maine, we want Maine people to be clear that all adults are now eligible for a booster."

Booster eligibility has been expanded to all adults in several other states, including New York, New Jersey, Arkansas and Colorado.

For the first time in more than two months, U.S. death rates are not predicted to decline in the weeks to come.

Forecast models used by the CDC are predicting that weekly death totals will likely remain stable or have an unknown trend in the next four weeks, with thousands more Americans expected to lose their lives by early December.

The model -- from the COVID-19 Forecast Hub at UMass Amherst -- expects around 14,400 more virus-related deaths in the U.S. over next two weeks, with a total of around 791,100 American lives lost by Dec. 11.

-ABC News' Arielle Mitropoulos

Two new studies published by the Centers for Disease Control and Prevention Friday add further evidence of the risks COVID-19 poses during pregnancy -- especially during the delta surge.

One study found the risk of stillbirth was nearly doubled among pregnant women with COVID-19 compared with pregnant women without COVID-19. The risk of stillbirth increased as the highly transmissible delta variant took hold across the nation. The risk of stillbirth is now four times greater -- up from one-and-a-half times greater -- since the delta variant first appeared.

The other study found that pregnant women with COVID-19 were more likely to die compared with non-pregnant women of similar ages who were also infected. The study, which looked specifically at infections in Mississippi, also found that the delta surge made things worse. Pre-delta, roughly five out of 1,000 pregnant women with COVID-19 died during pregnancy; during delta's predominance, the rate was 25 per 1,000.

The latest studies reinforce the urgent call for pregnant people to get vaccinated, though only 35% were fully vaccinated prior to or during their pregnancies, in the most recent count by the CDC. COVID-19 vaccines are safe and recommended for pregnant people.

-ABC News' Lauren Joseph and Sony Salzman