The Ontario government has come under fire from critics after COVID-19 immunizations ramped down over the holidays. The Ministry of Health said in a statement Monday that hospitals administering the vaccine asked to change the schedule to ensure proper staffing levels on wards and in long-term care homes during the break. The province said five of its 19 vaccination clinics were open on Sunday, 10 were running Monday, and all sites are expected to resume operations on Tuesday. It said more than 13,000 of an expected 90,000 doses of the Pfizer-BioNTech shot—which are earmarked primarily for hospitals due to its storage requirements—had been administered so far. “We anticipate getting through the 90,000 doses at our 19 active hospital sites in the next several days as we await future shipments from the federal government,” the ministry said. The pause in vaccinations stirred outrage among critics, including some in the health-care field. Toronto …