Opinion: Climate change and human immunity: invest now or pay more later

World leaders, beckoned by President Biden, are assembling on Earth Day, April 22, to create greater urgency to fight climate change. The summit is taking place during the worst infectious disease pandemic in a century.

World leaders need to pay heed to the climate change warning signs that have been flashing for decades. Scientists and policymakers have long predicted that as human migration due to weather extremes brings people into closer contact with animals harboring novel pathogens, humanity will face increasingly grave health risks, including future epidemics and pandemics.

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