The outbreak occurred in the midland during April and May.
The HSE is highlighting the dangers of complacency after 54 people became infected from one case of covid-19 in the midlands.
The initial case was a retail worker in the region, who contracted the virus in April.
A social gathering then led to it spreading to a further 15 households, a take-away restaurant and a creche.
Dr. Una Fallon, Director of Public Health in the Midlands, says it's a typical example of what can happen when complacency sets in.
She explains how it spread from the initial workplace outbreak:
                            
            Median House Prices Rise In Midlands
        
            Literary Festival Kicks Off In Laois Tomorrow
        
            New Entrance To Laois Shopping Centre Gets Green Light 
        
            Midlands Winners For Family Carer Of The Year Announced 
        
            INTO Survey Reveals Job Vacancies In Over Half Of Special Schools 
        
            Offaly Mother Raises Almost €2k for Down Syndrome Ireland
        
            Laois TD Urges Stronger Support For Tillage Sector
        
            Midlands Agricultural Land Prices Surge 10% In A Year
        
            People Weren't Happy With The Choice - Spoil The Vote Campaign
        
            Cannonball Ireland Raises Over €2.2m For Children’s Charities
        
            Plans Submitted To Revive Fire Damaged Café In Laois
        
            Gardai Seek Help In Locating Hijacked Car In Midlands
        
            Ryanair CEO Pleased With Jump In Profits
        
            TDs Call To Deport Convicted Relatives In Ashling Murphy Case
        
            Former Mayor of Westmeath County Council Laid To Rest
        
            Cabinet to Consider Charges For Asylum Seekers In IPAS Centers
        
            Gardai Looking For Man Last Seen In Midlands
        
            Jobs Fair In Support Of Couriers To Take Place In Laois
        
            New ‘Give Take Return’ Recycling Pilot To Launch In Westmeath
        
            Muintir Na Tíre Honoured For 40 Years Of Community Service In Laois