Alva Review-Courier -

The new virus from China has the world on edge because it's a close cousin to viruses that killed hundreds in separate outbreaks. While it's too early to tell if this latest threat will prove as deadly, health authorities are drawing on lessons from that grim past.

WHAT'S THE LINK

The new virus comes from a large family of coronaviruses, some causing nothing worse than a cold. But in late 2002, a coronavirus named SARS erupted in southern China, causing a severe pneumonia that rapidly spread to other countries. It infected more than 8,000 people and killed 774 -- and then it disappeared, thank...