Prevalence

The prevalence of long COVID has declined in the United States among the general population and people with a previously documented case of COVID-19, although many adults still report persistent symptoms, a pair of studies found.

New county-level estimates of Alzheimer’s prevalence released at the Alzheimer’s Association International Conference may help inform allocations of funding, staffing and other resources toward caring for patients.

Prevalence of prurigo nodularis is higher than previously estimated and is associated with many comorbidities, according to a study.

The adjusted prevalence of gout in Asian Americans doubled from 3.3% in 2011-2012 to 6.6% in 2017-2018, numerically exceeding the prevalence in all other racial and ethnic groups, according to data published in JAMA Network Open.

Racial, ethnic and socioeconomic differences in the prevalence of food allergies are evident in ED visits related to food allergies and epinephrine autoinjector use, according to a study published in JAMA Network Open.

The number of cancer survivors with self-reported functional limitations throughout the United States has more than doubled over the past 2 decades, according to data published in JAMA Oncology.

A study investigating nonarteritic ischemic optic neuropathy in the U.S. found notable prevalence in white men and Black men and women and frequent association with diabetes and high cholesterol levels.

The prevalence of autism among 8-year-olds in the United States rose to approximately one in 36 children in 2020 amid a shift in the demographic makeup of children diagnosed with the condition, according to data published Thursday.

Alopecia prevalence and incidence rates increased between 2016 and 2019, a trend that may be reflective of a growing disease burden or simply due to more patients seeking care, according to a study.

Researchers reported finding higher rates of atrial fibrillation among a large primary care population compared with previous estimates in community-based research cohorts.