How evolution tamed a deadly virus and why we should still worry

Over the last century, a once-deadly mosquito-borne virus has evolved so that it no longer sickens humans. New research shows that changes in the virus's ability to target human cells paralleled the decline in illness and death. The findings offer important lessons in virology that may help guide better preparedness for future outbreaks of other viral diseases.

from Top Health News -- ScienceDaily https://ift.tt/FyfiCGS