A cell line infected by Mayaro virus isolated from one of the participants in the study. Credit: Emerging Infectious Diseases (2024). DOI: 10.3201/eid3005.231406 An article published in the journal Emerging Infectious Diseases shows that Mayaro and chikungunya viruses are circulating at the same time (co-circulating) in Roraima, Brazil’s northernmost state and part of the Amazon biome. According to the authors, their findings reinforce the need for more effective epidemiological surveillance in the region. The researchers were surprised by the discovery. Their initial hypothesis was that other viruses were highly unlikely Read More