But additional tests have found a different virus in some who died.

Many different viruses, bacteria, or parasites can cause these symptoms.

The common cold can be caused by nearly 250 different viruses.

Several hundred different viruses may cause your cold symptoms.

There are more than 200 different viruses that cause colds and this is one of the reasons we get so many.

"Many different viruses have proteins that cause this kind of fusion event," he said.

They are not immune to the more serious hepatitis-B, which is caused by a different virus.

I have to imagine by now that every program in America is infected with ten different viruses.

There are more than 100 different viruses that cause the common cold.

Any 1 of 1000 different viruses can cause the common cold.