WHO Establishes New Laboratory Directives for Andes Virus Detection Amid Surveillance Phase

The World Health Organization (WHO), in coordination with international reference laboratories, has issued a comprehensive technical brief establishing unified diagnostic guidelines for the current Andes virus (ANDV) outbreak. Given that hantaviruses can occasionally present with cross-reactive antibody responses on standard rapid assays, the new WHO directive mandates double-layered testing using virus-specific Real-Time Polymerase Chain Reaction (RT-PCR) paired with high-throughput genomic sequencing for all high-risk contacts currently undergoing isolation. Epidemiological metrics remain entirely stable worldwide, with the total case count firmly locked at 11 (9 laboratory-confirmed, 2 probable) and no new deaths reported beyond the initial 3 fatalities. Public health officials emphasized that setting these rigorous laboratory standardizations is crucial for preventing false-positive data spikes during the remaining weeks of the mandatory 42-day surveillance window. The global risk categorization continues to be assessed as "Low" by both the WHO and the ECDC, as data confirms zero community transmission outside of the original cruise ship travel cluster.