Morbidity and Mortality Weekly Report

Diseases, Conditions, Syndromes

Almost 3,000 cases of West Nile virus reported in U.S. in 2021

In 2021, there were 3,035 reports of arthropod-borne viruses (arboviruses) in the United States, including 2,911 caused by West Nile virus, according to research published in the August 25 issue of the U.S. Centers for Disease ...

Diseases, Conditions, Syndromes

Long COVID symptoms can emerge months after infection

Long COVID can persist for at least a year after the acute illness has passed, or appear months later, according to the most comprehensive look yet at how symptoms play out over a year.

Diseases, Conditions, Syndromes

Travel-linked dengue cases in US peaked in 2019: Report

About 20 percent of the 7,528 confirmed or probable travel-associated U.S. dengue cases reported during 2010 to 2021 occurred in 2019, according to research published in the July 28 issue of the U.S. Centers for Disease ...

Arthritis & Rheumatism

Prevalence of arthritis 305 per 100,000 children, teens in U.S.

The prevalence of arthritis is 305 per 100,000 children and adolescents in the United States, with higher prevalence among non-Hispanic Black or African American versus non-Hispanic White children and adolescents, according ...

Diseases, Conditions, Syndromes

251 cases of soft tick relapsing fever reported in 2012 to 2021

During 2012 to 2021, 251 cases of soft tick relapsing fever (STRF), caused by certain Borrelia spirochetes and transmitted to humans by soft-bodied Ornithodoros ticks, were reported in 11 states, according to research published ...

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