SINGAPORE - A steady queue formed at various supermarkets and pharmacies on Monday (July 5) morning, the first day of the distribution of free oximeters to every household to curb Covid-19 infection spread. The device, given out by Temasek Foundation, checks the oxygen level in the blood to detect early signs of a deterioration in health. It is meant to help the nation manage the spread of new and more infectious variants of the Covid-19 virus. When The Straits Times visited supermarkets and pharmacies in Bishan, Clementi and Serangoon on Monday morning, a steady stream of 10 people were in line at each outlet. Most of the people who collected their oximeters are either the elderly, or family members with seniors or children at home. Housewife Elaine Lee, 70, who was collecting her oximeter at Guardian in Junction 8, said that her husband, also 70, is sick. The device will help to monitor their health. "I got this so we will be less worried," she said. Housewife Anna Tan, 73, who was collecting her oximeter at Unity in Clementi Mall said she could not be vaccinated. "After a health screen, I was identified to have possible allergies to the vaccine... I want to get the oximeter for ...