The provincial government announced an increased supply of vaccines would allow an expansion of eligibility for the vaccines. From Friday, anyone aged 55 or over will be allowed to book an appointment through the provincial booking system at covid-19.ontario.ca/book-vaccine/. The age bands were expected to drop weekly until May 24, when everybody aged 18 and over would be eligible to make a booking. From Thursday, licensed childcare workers were also eligible to book a vaccine.