The number of U.S. Oropouche cases have more than doubled, according to data reported to the CDC through its ArboNET surveillance system.
The CDC reported 74 cases throughout the U.S. as of Sept. 17, up from 32 the agency reported as of Sept. 10.
The cases were reported by five states, with 70 occurring in Florida. New York, Kentucky, Colorado and California have reported one case each. All U.S. cases have been associated with travel.
Oropouche is typically transmitted to humans through bites from midges or mosquitoes infected with the virus. There are no vaccines or antiviral treatments available for the virus, according to the CDC.
Sixty percent of individuals infected with Oropouche will become symptomatic. Typical symptoms include fever, chills, headache, muscle aches and joint stiffness, nausea, vomiting and diarrhea. An estimated fewer than 5% of patients will develop more serious symptoms1, which include hemorrhagic manifestation and neuroinvasive disease.
Cases of Oropouche virus being passed to a fetus during pregnancy have been reported in Brazil and are under investigation.
The CDC issued an Oropouche health advisory to clinicians and public health authorities Aug. 16 and continues to recommend pregnant patients avoid non-essential travel to areas seeing cases of the disease.
The countries associated with the most recent Oropouche outbreak are Bolivia, Brazil, Colombia, Cuba, Dominican Republic and Peru, according to travel health notices issued by the CDC.