Bats in China carry all the ingredients to make a new SARS virus

Dangerous strains may arise when viral genes mix inside a bat

horseshoe bat

GOING VIRAL  Genetic studies of viruses from horseshoe bats (shown) in one cave in China suggest the animals are reservoirs of SARS coronaviruses. Bats harbor many viruses that can sometimes infect people, including Ebola and Marburg.

Libiao Zhang/Guangdong Institute of Applied Biological Resource, China

Viruses in bats may have mixed and matched genes to create the virus that gave rise to the deadly SARS outbreak in 2003, a new study suggests.