The H5N1 bird flu virus has exhibited heightened transmission among wild birds and marine mammals since its arrival in South America in 2022. Scientists express concerns over mammal-to-mammal transmission and potential mutations, increasing the risk to humans. Despite limited human cases, the Pan American Health Organisation (PAHO) plans to establish a regional commission to oversee monitoring and response efforts. Challenges include patchy data and coordination among different government agencies. The virus’s adaptation to mammals underscores the need for enhanced surveillance and collaboration across Latin American countries to mitigate public health threats.
H5N1 Bird Flu Spreading Aggressively in South America, Raising Human Risk
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