Researchers say the data can help parents decide whether to get a vaccine that dramatically reduces the risk of whooping cough and other diseases.
And a slight dip was noted in the percentage of adolescents receiving Tdap and meningococcal vaccines.
A new study finds fewer outright instances of vaccine hesitancy and refusal than have often been seen for other vaccines.
UN officials note some increases in childhood vaccination worldwide, but more work needs to be done to reach zero-dose children and combat vaccine hesitancy.
The guidance illustrates the growing chasm between the medical organization and the federal health agency.
Infants born to mothers vaccinated during pregnancy are less likely to contract whooping cough, develop complications, and die of the disease than those without such protection, the report suggests.
Diphtheria poses a moderate risk to Africa, after 29,000 suspected cases with 1,420 deaths have been reported in 8 nations since January 2025.
Experts say they expect the findings to show how effectively the vaccine reduces pertussis infections, hospitalizations, and deaths among infants.
But vaccine uptake was suboptimal, particularly for the flu vaccine.
One study found fairly high rates of flu, mumps, and hepatitis A, and the other found that only 28% of adults have been vaccinated against tetanus and diphtheria.
