NRPH reports 34 cases on Tuesday in another large single-day increase.
It is the second time in less than a week that the region confirms over 30 cases in a single day.
Three of the cases were found in Thorold residents, regional statistics reveal, as the historic total is now listed as 115.
There are in total 228 active cases in Niagara.
There are in total 15 outbreaks still listed as active.
Ontario update
Public Health Ontario has confirmed 1,676 new cases of COVID-19 today, which is the lowest daily case report in December so far.
The province has reported 10 deaths today, including four people between the ages of 60 and 79 years old, and six people over the age of 80. Five of the people whose deaths were reported today were residents of long-term care homes.
Since yesterday, 52 people have been hospitalized with COVID-19 and 11 people have been admitted to intensive care units.
Of the 1,676 new cases reported today, 588 are from Toronto, 349 are from Peel, and 141 are from York Region.
Public Health Ontario has also confirmed 333 new school-related cases today, including 278 student cases and 55 staff cases. There are 11 schools in Ontario currently closed because of COVID-19 cases and 853 schools with one or more confirmed cases of COVID-19.
There are currently 16,151 active, lab-confirmed cases of COVID-19 in Ontario. There are 794 COVID patients hospitalized (up from 725 yesterday), including 219 in intensive care units (up from 213 yesterday) and 132 on ventilators (up from 121 yesterday).
Since yesterday's update, the province's public health labs have processed 39,198 tests, which produced a five per cent positivity rate. The Ontario government's goal is to have a per cent positivity rate at or below three per cent.
To date, the province has confirmed 130,910 cases of COVID-19 in Ontario and reported 110,951 recoveries and 3,808 deaths.
The average cumulative incidence rate in Ontario is 880.7 cases per 100,000 people. The weekly incidence rate is 82.6 cases per 100,000 every seven days.
