Incidence

The incidence and prevalence of inflammatory bowel disease have increased in Denmark over the past two decades, most notably prevalence of ulcerative colitis among adults older than 40 years, according to a study in Gastroenterology.

Childhood obesity incidence was higher and came at younger ages during the 2000s compared with the previous decade, according to a study in Pediatrics.

Ivermectin did not lower the incidence of hospitalization among high-risk adults with COVID-19 enrolled in a large double-blind, randomized, placebo-controlled trial in Brazil, researchers reported in The New England Journal of Medicine.

The use of low dead space syringes was associated with a 76% reduction in the odds of hepatitis C virus infection among people who inject drugs, according to a study of U.K. data.

Despite a slight decrease in the worldwide incidence and mortality rates for stroke between 1990 and 2019, the overall numbers remain high, according to study results published in Neurology.

Interventions that targeted vascular risk factors in a real-world setting did not appear to reduce dementia incidence in old age, according to study results in a research letter published in JAMA Neurology.

Tuberculosis incidence among people aged 50 years or older in the United States is high but declining rapidly within subsequent birth cohorts, according to a study in Clinical Infectious Diseases.

Projections presented at the Alzheimer’s Association International Conference estimate that dementia cases will almost triple to more than 152 million by 2050, with the greatest increases expected in Africa and the Middle East.

The increase in melanoma incidence has been caused by multiple factors, with overdiagnosis possibly playing a role, according to a review in the Journal of the American Academy of Dermatology.

Research published in Journal of the American Geriatrics Society highlighted significant geographic variation in the incidence of Alzheimer’s disease in the United States.