The number of COVID-19 positive patients being treated in Ontario hospitals has risen by nearly 11 per cent week-over week amid signs that viral activity levels are beginning to pick up.

The latest data from the Ministry of Health suggests that there are now 1,265 people in Ontario hospitals testing positive for COVID-19, up from 1,141 at this time last week. The number of those patients in intensive care also rose week-over-week, going from 129 to 133.

It is the highest number of COVID-19 positive patients being treated at Ontario hospitals at any one point since Aug. 26.

It also comes as wastewater surveillance data from Public Health Ontario begins to point towards an increase in the number of active infections in most parts of the province.

In fact, data released last week suggested that the so-called wastewater signal in Ontario has been climbing since around the second week of September but remains lower than where it was during a rare summer wave of the pandemic in July.

“I wouldn’t be surprised if we are starting to see a rise in cases. I mean it's hard to know because we just don't have that same degree of community level testing and you're really reading the tea leaves with hospitalization data, percentage of tests that are positive and wastewater signal but if you look over in European settings they are seeing an uptick in cases and hospitalizations,” infectious disease specialist Dr. Isaac Bogoch told CP24 earlier on Thursday. “We chatted about this for months and months and months (a fall wave). We knew this was going to happen.”

In the latest batch of data released by the ministry, most public health indicators do appear to be worsening as the weather cools and more people head indoors.

The number of new cases detected through PCR testing over the last week stood at 8,627, rising for the third week in a row.

The positivity rate on PCR testing also went from 11.98 per cent last week to 12.42 per cent this week.

There were fewer active outbreaks in long-term care homes and retirement homes this week than last but there was an increase in the number of active outbreaks in hospitals and shelters.

The ministry also added 72 net new deaths to Ontario’s COVID-19 tally on Thursday, bringing the number to 14,351.

More than 4,000 deaths attributed to COVID-19 have been added to Ontario’s tally so far in 2022.

Meanwhile, earlier this week Ontario made all adults 18 and up eligible for a new bivalent booster shot of the COVID-19 vaccine specifically aimed at Omicron so long as they are at least three months removed from their last dose.

Speaking with CP24, Bogoch said that the new booster “will do a lot of good in terms of protecting you against severe infection” and will “hopefully bring back some more durable protection against infection and onward transmission.”

“That is what we saw much earlier in the pandemic with the original virus,” he said. “It just takes a bit of time to get the data.”