Time trends in this report are presented by epidemiological week, a schedule used by the national FluWatch program coordinated by Public Health Agency of Canada.
Below is the table showing the extended epidemiological weeks used in the Provincial COVID-19 Surveillance Report
| Week | 2020 | 2021 |
|---|---|---|
| 1 | December 29 - January 4 | January 3 - January 9 |
| 2 | January 5 - January 11 | January 10 - January 16 |
| 3 | January 12 - January 18 | January 17 - January 23 |
| 4 | January 19 - January 25 | January 24 - January 30 |
| 5 | January 26 - February 1 | January 31 - February 6 |
| 6 | February 2 - February 8 | February 7 - February 13 |
| 7 | February 9 - February 15 | February 14 - February 20 |
| 8 | February 16 - February 22 | February 21 - February 27 |
| 9 | February 23 - February 29 | February 28 - March 6 |
| 10 | March 1 - March 7 | March 7 - March 13 |
| 11 | March 8 - March 14 | March 14 - March 20 |
| 12 | March 15 - March 21 | March 21 - March 27 |
| 13 | March 22 - March 28 | March 28 - April 3 |
| 14 | March 29 - April 4 | April 4 - April 10 |
| 15 | April 5 - April 11 | April 11 - April 17 |
| 16 | April 12 - April 18 | April 18 - April 24 |
| 17 | April 19 - April 25 | April 25 - May 1 |
| 18 | April 26 - May 2 | May 2 - May 8 |
| 19 | May 3 - May 9 | May 9 - May 15 |
| 20 | May 10 - May 16 | May 16 - May 22 |
| 21 | May 17 - May 23 | May 23 - May 29 |
| 22 | May 24 - May 30 | May 30 - June 5 |
| 23 | May 31 - June 6 | June 6 - June 12 |
| 24 | June 7 - June 13 | June 13 - June 19 |
| 25 | June 14 - June 20 | June 20 - June 26 |
| 26 | June 21 - June 27 | June 27 - July 3 |
| 27 | June 28 - July 4 | July 4 - July 10 |
| 28 | July 5 - July 11 | July 11 - July 17 |
| 29 | July 12 - July 18 | July 18 - July 24 |
| 30 | July 19 - July 25 | July 25 - July 31 |
| 31 | July 26 - August 1 | August 1 - August 7 |
| 32 | August 2 - August 8 | August 8 - August 14 |
| 33 | August 9 - August 15 | August 15 - August 21 |
| 34 | August 16 - August 22 | August 22 - August 28 |
| 35 | August 23 - August 29 | August 29 - September 4 |
| 36 | August 30 - September 5 | September 5 - September 11 |
| 37 | September 6 - September 12 | September 12 - September 18 |
| 38 | September 13 - September 19 | September 19 - September 25 |
| 39 | September 20 - September 26 | September 26 - October 2 |
| 40 | September 27 - October 3 | October 3 - October 9 |
| 41 | October 4 - October 10 | October 10 - October 16 |
| 42 | October 11 - October 17 | October 17 - October 23 |
| 43 | October 18 - October 24 | October 24 - October 30 |
| 44 | October 25 - October 31 | October 31 - November 6 |
| 45 | November 1 - November 7 | November 7 - November 13 |
| 46 | November 8 - November 14 | November 14 - November 20 |
| 47 | November 15 - November 21 | November 21 - November 27 |
| 48 | November 22 - November 28 | November 28 - December 4 |
| 49 | November 29 - December 5 | December 5 - December 11 |
| 50 | December 6 - December 12 | December 12 - December 18 |
| 51 | December 13 - December 19 | December 19 - December 25 |
| 52 | December 20 - December 26 | December 26 - January 1 |
| 53 | December 27 - January 2 | NA |