Photo taken on April 5, 2020 shows marks on the ground reminding people of social distancing at a restaurant in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on April 4, 2020 shows a notice on the beach reminding people of social distancing in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on April 5, 2020 shows a notice on the cashier reminding people of social distancing at a shopping centre in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on March 25, 2020 shows marks on the sofa reminding people of social distancing at a clinic in Melbourne, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Photo by Gui Qing/Xinhua)

Photo taken on April 5, 2020 shows a notice on a door reminding people of social distancing at a restraunt in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on April 5, 2020 shows marks on the ground reminding people of social distancing at a supermarket in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on April 4, 2020 shows marks on the ground reminding people of social distancing at a shopping mall in Wollongong, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Photo by Zhu Hongye/Xinhua)

Photo taken on April 5, 2020 shows marks on the ground reminding people of social distancing at a supermarket in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)

Photo taken on April 5, 2020 shows marks on the ground reminding people of social distancing at a shopping centre in Sydney, Australia. According to the Department of Health there had been 5,635 confirmed cases as of Sunday morning -- an increase of only 3.3 percent from 5,454 as of Saturday morning. (Xinhua/Bai Xuefei)