With both of these anti-infection mechanisms launching full-blown attacks at once, the virus can't escape.

Second, he said, there was a danger that the virus could escape, as it did in England.

Then in 1952 the virus escaped from California in a train-load of infected pork.

Sharon told him that an experiment in the new biology lab had gone wrong and some viruses had escaped.

I thought even a virus couldn't escape it.

Release occurs when the new viruses escape or are released from the cell.

He said there were scattered news reports of the real-life incident in 1989, when an extraordinarily deadly virus almost escaped from the Army lab.

In 1995 the virus escaped quarantine and subsequently killed 10 million rabbits within 8 weeks of its release.

The next year, two cases occurred in England because the virus accidentally escaped from a research laboratory.

When Ryuji was born, the virus escaped and mutated.