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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In 2022, only 440 cases (1.5%) were recorded in rural areas.
In other updates, the WHO's latest epi report notes transmission and new cases in some world regions, including parts of Asia and in Pakistan.
Beginning in May 2022, the UK, Spain, and the US saw a growing number of cases of mpox primarily among men who have sex with men.
The 3 studies are the largest yet to measure how well the vaccine performed in the US amid the mpox outbreak of 2022.
Seven linked transmission chains were noted, including 3 patients who had linked partners who were female sex workers.
Sampling reveals considerably more mpox DNA than expected based on area cases and hospitalizations.
The severe case of mpox involved pulmonary illness.
Spring and summer gatherings and vaccination gaps are among the factors that could fuel another surge.
Countries have made steady progress with outbreaks, but the virus is still a threat in multiple world regions.
The organizations recommend 4 actions to help prevent and manage any future outbreaks.