In total, 6.4% of participants had mpox antibodies, including 4% of cis women, 7% of cis men with only cis women partners, and 9% of men who have sex with men.
The test the US Centers for Disease Control and Prevention uses to identify clade I mpox cases is 'most likely not reliable' for detection of the substrain identified in the study, the authors say.
Another mpox study today showed that dose-sparing vaccine administration of the Jynneos vaccine appeared to have worked.
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Cases started declining before the vaccine campaign launched.
Of the 29% of veterans who tested positive for orthopoxvirus, 3% had been vaccinated with Dryvax, and 7% had received ACAM2000.
China is one of the current hot spots in Asia and reported 501 cases in August.
Groups announced new clinical trials and more support for universal flu, MERS, and mpox vaccines.
Of the 399 cases with information on probable transmission routes, 95.2% identified sexual contact, 3.3% cited nonsexual contact, and 0.5% reported healthcare-associated spread.
Researchers say the results suggest that an eye exam should be performed in mpox patients with ocular symptoms and those with moderate to severe skin lesions.
People with both mpox and HIV accounted for 40.7% of all mpox cases in California during the study period and 56% of mpox-associated hospitalizations.
While breakthrough infections were mostly mild, infection- and vaccine-induced immunity don't fully protect against mpox.
Roughly 30% of patients reported no male-to-male sexual contact in the 3 weeks before symptom onset or were missing exposure information.
The WHO guidance replaces temporary recommendations, Florida has 15 dengue cases now, and Connecticut confirms 4 people infected with the tick-borne Powassan virus.