In the week to August 8 there were 46 Covid-related admissions to North West Anglia NHS Foundation Trust (NWAFT) hospitals - an increase of 20 admissions from the previous week.
And as of August 10 there were 37 coronavirus inpatients, six of whom required mechanical ventilation (MV) beds.
This is up from 25 patients on August 3 (with three requiring MV beds) and well up from a month ago (July 10), when there were three Covid patients, none requiring an MV bed.
Dr Kanchan Rege, chief medical officer at NWAFT, said: “The patients currently being treated and admitted to our hospitals with Covid-19 are predominantly those in the younger age brackets.”
It comes as data shows new Covid cases are being found mostly in people in their 20s.
As of August 10, the rolling rate for new cases among those aged 20 to 24 in Peterborough was 1,723.3 per 100,000 people.
In comparison the rolling rate for those aged 80 to 84 was 24 per 100,000.
Peterborough has the fifth highest rolling case rate in the country, with more than 1,000 new cases recorded in the seven days to August 11.
Despite the prevalence of younger patients, a statement from the chief executive of NWAFT revealed that the oldest patient to have died of Covid in Peterborough was 105 and had passed since August 5.
Caroline Walker said: “I can confirm that sadly, 706 patients being cared for in our Trust have passed away since we began reporting Covid-19-related deaths.
"There have been 228 at Hinchingbrooke Hospital and 479 at Peterborough City Hospital. All patients were aged 30 to 105 years old and the majority of those had pre-existing health conditions.
"Our thoughts and condolences remain with the patients' families and loved ones at this difficult time."
Dr Rege said: “Everyone aged 16 or over is now eligible for the Covid-19 vaccination and we would urge anyone who hasn’t yet had their first vaccine to either get an appointment booked via the NHS website or use one of the many walk-in vaccination clinics now running in our region.
“It is also really important that everyone attends for their second vaccination to maximise the protection the vaccine offers.”