An elderly man, believed to be Kefalonian and aged 82, and his younger wife, believed to be Polish and aged around 56. Allegedly live in Poland but return to Argostoli for the summer. Both asymptomatic (carrying Covid-19 but have no symptoms of it). Couple are isolating while local authority are 'tracking and tracing', anyone who's come into contact with the couple (or either one) are asked to get tested.