OTTAWA—Canada is set to receive 910,000 COVID-19 vaccine doses this week as pharmaceutical companies ramp up deliveries to make good on their contractual obligations by the end of the month. The Public Health Agency of Canada says the country will receive nearly 445,000 shots from Pfizer-BioNTech for the second week running as the companies settle into a rhythm following a lengthy lull in January and much of February. The remaining 465,000 shots are expected from Moderna, as the pharmaceutical firm steps up its delivery schedule from once every three weeks to once every two. The influx of new shots comes as the federal government looks for vaccine-makers to finalize delivery of a total of eight million doses by March 31. That includes 5.5 million from Pfizer-BioNTech—up from the four million originally expected—and two million from Moderna. Canada received 500,000 doses of the AstraZeneca-Oxford vaccine last week. The federal government is …