HSE says the ransomware detected in three hospitals this morning not connected to the WannaCry ransomware virus
The executive says up to 20 machines were quickly isolated from networks - before it spread - with the machines replaced and the systems put back online
This afternoon, the HSE confirmed they were separate, older viruses, but the HSE says their network will remain isolated for a further 48 hours to maintain protection.
The HSE's Chief Information Officer is Richard Corbridge.
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