Authorities say the bacteria, Listeria monocytogenes, could pose a risk in certain frozen meals if the meal is not heated properly.
Listeriosis is caused by consuming listeria monocytogenes-contaminated food, and is particularly dangerous for the elderly, pregnant and newborns.
'We are advising any customer to seek prompt medical attention if they develop any symptoms,' Meals on Wheels acting chief executive officer Julie Bonnici said.
'Meals on Wheels holds the health and well-being of every customer as our number one priority and we have a stringent food safety program in place.'
The supplier say the ready-to-eat meals are not affected by the discovery, and they are working to ensure all its customers are notified of the recall.