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experrinment6 karma

Hi Helen! Thanks so much for being here today. I've heard scientists say that if the surge in Zika in Brazil is connected to the cases of microcephaly, it might mean Zika rapidly evolved recently with this pathogenic symptom. What are the mechanisms by which a virus like Zika can rapidly evolve?

experrinment1 karma

Are there other theories that scientists have as to why the virus seems to have changed?