Although no hospitals in the county were affected by last Friday's attack, the decision to close the IT systems was taken as a precautionary measure.
Dr Anne Rainsberry, NHS incident director, said: "We have been working with 47 organisations providing urgent and emergency care who have been infected to varying degrees".
Open as normal from 8am until 8pm. "There is no longer a need to phone in advance", said a spokesperson for the trust. Call 0300 123 11 44 to make an appointment.
"We apologise for any inconvenience caused".
A massive global cyberattack that has so far struck more than 200,000 companies, hospitals, government agencies and other organizations in 150 countries appears to have been slowed down in Europe, according to Europol, the European Union police agency.
Economic experts offered differing views on how much the attack, and associated computer outages, would cost businesses and governments. "We are lucky that this logic bug is still present", Suiche said.
An NHS England spokesman described it is a "very complex emerging picture".
How many countries were affected?
Patients have been urged to use the NHS "wisely" as it discovers the full impact of Friday's global cyber-attack. Blackpool Victoria Hospital was not one of them.
Op Gen Oorth said today it was still "a bit early too say who is behind it, but we are working on a decrypting tool".More news: Senators draw first blood in conference final
More news: Mike Brown nearly arrested heading to Game 2 thanks to Gregg Popovich
More news: Following ransomware attack, Microsoft urges governments to 'wake up'
But did they? At the end of a year ago the software firm Citrix said that a Freedom of Information request had revealed that 90% of hospitals still had machines running on Windows XP.
Brad Smith, Microsoft's president and chief legal officer, said in a blog post Sunday that it was in fact the NSA that developed the code being used in the attack.
With WanaCryptor and MS17-010 both "unleashed into the wild", F-Secure said the current problem seems to have combined and magnified the worst of the dangers those programs represent.
Cyber criminals released a virus which encrypted NHS data and demanded a ransom payable in bitcoin - an internet currency - to have them decrypted, with the threat of deletion if the money was not handed over.
The apparent chink in the NHS's defences led to criticism of the Government, with the Liberal Democrats demanding an inquiry.
The National Crime Agency encourages victims not to pay any ransom and to contact Action Fraud.
Though a British security researcher "MalwareTech" managed to stop the spread of the virus, hackers have issued new versions that cybersecurity organisations are trying to counter. Companies including Hitachi and Nissan Motor Co. reported problems but said they said had not seriously affected their business operations. The temporary halt in production was a "preventative step", Renault said, giving no details on how badly the plant was affected by the malware.
It highlighted how, in February 2016, the Department of Health had "transferred £950m of its £4.6bn budget for capital projects, such as building works and IT, to revenue budgets to fund the day-to-day activities of NHS bodies".
He said: "Although we have never seen anything on this scale when it comes to ransomware attacks, they are relatively common and there are things that you can do, that everyone can do, all of us can do, to protect ourselves against them".