they explain why tho, it's not such easy data to interpret:
"So, one of the dynamics here is that people feel, after vaccination and boosting, that they're more protected than they actually are, so they increase their risks," he said. "That, I think, is the major driver of these statistics."
On the CDC's
dashboard, which is updated monthly, the agency acknowledges several "factors likely affect crude case rates by vaccination and booster dose status, making interpretation of recent trends difficult."
The CDC had rolled out the page several months ago, amid demands for better federal tracking of breakthrough cases. It has now grown to encompass data from immunization records and positive COVID-19 tests from 30 health departments across the country
For the week of April 23, it said the rate of
COVID-19 infections among boosted Americans was 119 cases per 100,000 people. That was more than double the rate of infections in those who were vaccinated but unboosted, but a fraction of the levels among unvaccinated Americans.
That could be because there is a "higher prevalence of previous infection" right now among those who are unvaccinated and unboosted, the CDC said. More boosted Americans may now have abandoned "prevention behaviors" like wearing masks, leading to an uptick.
Some boosted Americans might be more likely to seek out a lab test for COVID-19, as opposed to relying on
over-the-counter rapid tests that go largely unreported to health authorities.
"Home testing has become, I think, the single biggest concern in developed countries that can interfere with our measurements," CDC's Ruth Link-Gelles told
a conference hosted by the National Foundation for Infectious Diseases last month.