A husband-and-wife team of scientists pleaded guilty to illegally importing potentially toxic lab chemicals and sending confidential mRNA vaccine research to China

Chenyan Wu and Lianchun Chen, a married couple who worked as research scientists for a major American pharmaceutical company, pleaded guilty today in federal court to criminal charges stemming from their efforts to obtain confidential mRNA research from that company to advance their husband's competing laboratory research in China.

Since at least 1993, the couple has been married. Wu worked for several pharmaceutical businesses t....