MONTREAL -- Quebec has announced it will no longer offer the AstraZeneca vaccine as a first dose. The decision is based on the recommendations of the Quebec Immunization Committee, according to a Health Ministry press release. The government notes that almost all of the available doses in Quebec have been used up in recent weeks. People aged 45 and over were able to get vaccinated with AstraZeneca's product at the end of April, before the age group was officially opened. The vaccine was not offered to anyone younger than 45 years old. An additional 148,000 doses of AstraZeneca's vaccine are scheduled to be delivered next week. Those doses will be reserved as second doses for people who received the CoviShield or AstraZeneca vaccine as a first dose.