By NewsDesk  @infectiousdiseasenews

Researchers from the Institute of Virology JM Vanella of the National University of Córdoba (Inviv, UNC) and the Institute of Regional Medicine of the National University of the Northeast (Unne) detected Madariaga virus in mosquitoes captured in the Chaco, according to a La Voz report (computer translated).


The study detected the virus in Culex mosquitoes collected in wild areas of the province of Chaco.

Madariaga virus can infect several mammals that could serve as hosts, such as rats and bats, as well as birds.

In Argentina, it was first detected in animals in the 1930s. The strain found in the Chaco belongs to the same lineage discovered in those years, which would indicate that the virus is endemic to the region.

Madariaga virus (MADV), or South American eastern equine encephalitis virus (EEEV), has–until now– been found primarily in animals of South and Central America, with the first human outbreak occurring in Panama in 2010.

Less than a dozen human cases of MADV infection have been documented, and almost all were encephalitis cases seen as part of an outbreak in Panama.

A recent study reported the apparent recent introduction of MADV into Haiti.