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Multiple Choice

Mayaro virus has recently been reported outside the Amazon region in which country?

Mayaro virus is a tropical arbovirus transmitted by forest-dwelling mosquitoes and has long been associated with the Amazon region. Its detection outside that area, in Haiti, shows geographic expansion beyond the traditional Amazon focus. This matters because the illness it causes mimics dengue and chikungunya, so clinicians in new regions need to consider Mayaro in the differential for patients with dengue-like fever, especially if there is travel exposure to areas with known Mayaro activity. Laboratory confirmation is usually via RT-PCR during the acute phase or Mayaro IgM serology, though cross-reactivity with other alphaviruses can complicate interpretation. The emergence in Haiti highlights the importance of surveillance and vector awareness beyond classic endemic zones. Therefore, the country outside the Amazon region where Mayaro has been reported is Haiti.

Mayaro virus is a tropical arbovirus transmitted by forest-dwelling mosquitoes and has long been associated with the Amazon region. Its detection outside that area, in Haiti, shows geographic expansion beyond the traditional Amazon focus. This matters because the illness it causes mimics dengue and chikungunya, so clinicians in new regions need to consider Mayaro in the differential for patients with dengue-like fever, especially if there is travel exposure to areas with known Mayaro activity. Laboratory confirmation is usually via RT-PCR during the acute phase or Mayaro IgM serology, though cross-reactivity with other alphaviruses can complicate interpretation. The emergence in Haiti highlights the importance of surveillance and vector awareness beyond classic endemic zones. Therefore, the country outside the Amazon region where Mayaro has been reported is Haiti.