Residents of 11 south-east Queensland LGAs are waking to the first day of a snap three-day lockdown, which began on Saturday at 400pm. It comes as Queensland recorded nine new locally acquired cases of the highly-infectious Delta variant on Sunday, all linked to the growing outbreak spreading across Brisbane schools. There are now 18 cases in the cluster that was first detected in a 17-year-old student at Indooroopilly State School on Thursday. The 11 local government areas in lockdown are Brisbane Logan Moreton Bay Ipswich Redlands Sunshine Coast Gold Coast Noosa Somerset Lockyer Valley Scenic Rim A staff member from Ironside State School, which one of the siblings attends, has also tested positive, as has a medical student who tutors students . Chief Health Officer Dr Jeannette Young said the lockdown needed to be very restrictive due to the highly infectious nature of the Delta variant. In a statement released on Sunday, Dr Young described the latest incursion of COVID-19 as “deadly serious”. “It is our biggest outbreak in months and risks being our biggest outbreak ever,” Dr Young said. Dr Young described the Delta strain as “unforgiving” but said she “always had faith” in Queenslanders to listen and adhere to directions. “I know this lockdown is a huge disruption for the region. I am so sorry for that,” she said. “Please know I am fighting hard to prevent something so much worse. And I know you are too. “Better that we lock down now for three days and do our best to contain the virus, rather than three weeks. Or three months.” Businesses feel the pressure Small businesses spent Saturday afternoon preparing for the lockdown with cafes having to put off staff and manage stock. Paul Ryan prepares his cafe for takeaway service only during the lockdown. Stuart Bryce Paul Ryan, co-owner of Ananas Espresso in Graceville, said while he respected they were part of the community and would do their part, the challenges of lockdown were “tiring and stressful”. “For us in the hospitality industry our first challenge is lost sales and reduced income,” he said “Past that there is another level ” stress ” of yet again having to change your business overnight, having to talk to your staff about cutting down their hours, of managing stock you may or may not need, of giving up your limited free time to pivot once again to keep your head above water, for having no option other than to stand in front of customers, any of whom may be unwittingly carrying the virus. “Being a small business owner has always been about the ability to deal with and overcome challenges, however managing ongoing lockdowns is tiring and stressful and it gets harder each time.” Loading… Alexandra Headlands Surf Club CEO Ashleigh Robinson was busy cancelling functions and staff for their kiosk, restaurant, bar and function rooms. “Probably the most disturbing thing, other than staff well-being, is having to cancel functions,” he said. “We have one lady who this is her fourth time trying to have her party.” Meanwhile, Ekka organisers announced that preparations for the annual agricultural show had been put on hold for 24 hours, awaiting updates from Queensland Health and the RNA. What can we do? Queensland COVID-19 snapshot In latest reporting period Deaths  11 New cases 5,698 Queensland’s vaccine rollout First dose  93.2 per cent Second dose  92.7 per cent Latest case information from Queensland Health. During the lockdown, people in the 11 LGAs will only be able to leave their homes for the following reasons To obtain essential goods, including health care, within 10km of your home For essential work, school, or childcare To exercise, with members of your household or one person from outside your household, within 10km of your home To care for a vulnerable person  For a COVID-19 vaccination or test Anyone who has been in any of the 11 LGAs since 100am on Saturday must adhere to the lockdown, no matter if they are now in another part of Queensland or Australia.  Full list of Queensland’s exposure sites Queensland’s list of exposure sites continues to grow after more new cases today are linked to a student at Indooroopilly State High School. See the full list. What can’t we do? Funerals are limited to 10 people , as are weddings and this number includes the celebrant and couple. All community sport or professional sport was cancelled until the end of lockdown. However, it was later announced Brisbane’s Lang Park would be allowed to host five NRL matches  today and tomorrow. You cannot have any visitors to your home unless it is to provide support to a vulnerable person. You cannot visit anyone in aged care, hospital, disability care or correctional facilities although people can visit those who are receiving end-of-life care. What is open? Supermarkets and grocery stores will remain open during the lockdown so there is no need to panic buy. You are permitted to leave your home to buy essential items, such as groceries. Coffee shops, pubs and clubs are restricted to takeaway service only. [Qld local edition teaser] What is closed? Non-essential businesses will not be able to open. Gyms, hairdressers, cinemas, entertainment centres and places of worship are closed. Schools and day care centres in the 11 LGAs are only to be used by essential workers or vulnerable families. What about masks? Masks continue to be mandatory and you must wear one when you leave home, unless you have a lawful reason not to. You must wear a mask when exercising, such as going for a walk. You do not need to wear a mask if you are doing strenuous exercise but should carry one on you. You must also wear a mask indoors, including in hospitals, aged care disability centres and correctional facilities, if permitted to visit. If taking public transport, a taxi or using ride share, you must wear a mask.  A decision about lifting face mask restrictions for the 11 LGAs will be made closer to August 6. Queensland Health is rapidly contact tracing and tracking the movements of the new cases, especially those of the medical student.  They expect there to be “an enormous number of exposure sites” identified throughout Brisbane and further to the north, south and west. Queensland Health is urging people to continuously check  their list of exposure sites  and to come forward for testing at any sign of symptoms. Loading… Read our full coverage on COVID-19 here