Just like in real life, it took three hospitals several weeks to cure a common virus.

Three London hospitals whose computer systems were infected with a relatively old worm are now almost back online.

Around 5,000 PCs at St Bartholomew’s, the Royal London Hospital and The London Chest Hospital were hit in mid-November by an infection of Mytob, a worm that e-mails itself to other PCs and can be used to put other malicious software on a machine.

About 97 percent of those PCs are now clear of Mytob, according to a statement issued Friday. The remaining PCs, which are located in non-clinical areas, should soon come back online.

The question here is, now that they have healed them, are they immune from catching it again or is it just a matter of time?

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