Sprowston couple John and Ann Corcoran died of pneumonia
An "aggressive form of pneumonia" caused the deaths of a couple within hours of each other, an inquest has heard.
John Corcoran, 64, was found dead and his wife Ann collapsed at their home in Sprowston, near Norwich, on 11 January.
Norwich Coroner's Court heard the family had become concerned they could not contact the couple.
Mrs Corcoran, 58, died in hospital the following day.
PC Thomas Mann from Sprowston police told the inquest he went to the couple's house in Lindsay Road after being contacted by the family.
He said "Mrs Corcoran was collapsed in the kitchen area. I could see her legs in the kitchen doorway.
"John was found in the bedroom upstairs."
Post-mortem examinations revealed both had died of necrotising pneumonia.
William Armstrong said: "Both John and Ann had sadly succumbed to a very aggressive form of pneumonia which can take hold very quickly indeed."
He recorded verdicts of death of by natural causes in both cases.