How new mask prototypes can detect leaks and diagnose COVID.
![tricky test 2 tap number from high to low tricky test 2 tap number from high to low](https://www.puzzlegamemaster.com/wp-content/uploads/2020/04/tricky-test-2-ans.gif)
![tricky test 2 tap number from high to low tricky test 2 tap number from high to low](https://www.writerparty.com/wp-content/uploads/D840165E-681F-47C4-A590-32C5E67DEFE7-704x1024-503x731.jpg)
Catch up on the main COVID-19 news from Sunday January 23 with a look back at our coronavirus blog The NSW lockdown, first introduced on June 26 and now extended until the end of September, has become more restrictive as COVID-19 case numbers have climbed. While south-west and western Sydney remain the most affected areas, the virus has spilled over into the regions and across borders into the ACT, Victoria and New Zealand, which are all now contending with their own outbreaks. More than 17,000 locally acquired cases have been recorded in NSW this year, with the vast majority reported during the state's latest outbreak. Nine weeks into lockdown, it's daily figures above 1,000 the state is now grappling with. Just a month-and-a-half ago, Sydneysiders were holding their breath hoping daily COVID-19 cases wouldn't tip over into triple digits.