Howard Johnson, unable to play third base now because of a mysterious virus, will be a free agent.

Those who say a mysterious virus is causing disease, he said, should produce it.

Felix, meanwhile, reveals to Ned his belief that he is infected with the mysterious virus.

A mysterious virus comes out of nowhere and goes on a killing spree.

Jamie developed a mysterious virus at the age of 11.

A mysterious virus with the 100% mortality rate spreads across Japan.

She took a church mission trip to Mexico in 1996 and returned with a mysterious virus which ruined her health.

Medics discover that Rogelio's blood may be a cure for the mysterious virus.

But he also kept open the possibility that a mysterious virus or some other co-factor might be involved.

Out of chaos comes a mysterious virus that eventually kills everyone who is exposed to it.