The findings underscore the need for more education as some sexually transmitted infections increase, the authors say.
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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The patient sought medical attention in Stockholm but had recently visited Africa.
Twelve percent of animal swabs and 25% of environmental samples from 4 households tested positive for mpox DNA, but blood samples showed no viable mpox or orthopoxvirus antibodies that would indicate previous infection.
As plans move forward to mobilize vaccine, health officials still better epi information to best target the supplies.
Supporting factors included a high disease burden, accelerating spread, a concerning death rate, lack of diagnostics and vaccines, and a need for better coordination among countries.
The group meets on August 14 to assess the emerging complex situation in the African region.
Only 5% of Americans are worried about contracting mpox in the next 3 months.
The European region has so far reported 19 imported Oropouche virus infections, and the virus has recently been linked to severe fetal outcomes.
Though the risk remains very low, the CDC and state partners continue to look for the clade, including in wastewater samples.
As a novel clade spreads to the DRC's neighbors, it and other African countries are battling outbreaks involving two earlier clades.
Over the weekend South Africa said it now has 22 cases of the virus.
